Sampling
                                                                     $2,610,000
                                                                     $3,862,000
                                                                     $1,251,000
                                                                     $2,947,000
                                                                     $5,693,000
                                                                     $2,746,000
 PWS Lead Service Line Replacement
                                                                        $14,000
                                                                       $639,000
                                                                       $625,000
                                                                     $1,686,000
                                                                     $2,575,000
                                                                       $889,000
 Corrosion Control Technology
                                                                    $12,440,000
                                                                    $13,828,000
                                                                     $1,388,000
                                                                    $15,684,000
                                                                    $27,171,000
                                                                    $11,487,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                        $64,000
                                                                        $64,000
                                                                             $0
                                                                       $193,000
                                                                       $193,000
 Public Education and Outreach
                                                                        $15,000
                                                                     $1,461,000
                                                                     $1,446,000
                                                                        $51,000
                                                                     $2,241,000
                                                                     $2,190,000
 Rule Implementation and Administration
                                                                             $0
                                                                       $283,000
                                                                       $283,000
                                                                             $0
                                                                       $283,000
                                                                       $283,000
 Total Annual PWS Costs
                                                                    $15,079,000
                                                                    $20,136,000
                                                                     $5,057,000
                                                                    $20,368,000
                                                                    $38,156,000
                                                                    $17,788,000
 State Rule Implementation and Administration
                                                                       $469,000
                                                                     $2,275,000
                                                                     $1,806,000
                                                                       $569,000
                                                                     $2,589,000
                                                                     $2,020,000
 Household Lead Service Line Replacement
                                                                         $4,116
                                                                             $0
                                                                        $-4,116
                                                                       $341,000
                                                                             $0
                                                                      $-341,000
 Wastewater Treatment Plant Costs
                                                                         $7,231
                                                                        $12,000
                                                                         $5,185
                                                                        $17,000
                                                                        $71,000
                                                                        $54,000
 Total Annual Rule Costs
                                                                    $15,559,000
                                                                    $22,424,000
                                                                     $6,864,000
                                                                    $21,294,000
                                                                    $40,816,000
                                                                    $19,522,000
 Notes: Detail may not add exactly to total due to independent rounding.

 Exhibit C.137: National Annualized Rule Costs - Public CWS of Size 3,301 to 10,000 Treating Ground Water at 7% Discount Rate (2016$)

                               Low Cost Estimate
                               High Cost Estimate
 PWS Annual Costs
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
 Sampling
                                                                     $3,287,000
                                                                     $4,884,000
                                                                     $1,597,000
                                                                     $3,701,000
                                                                     $6,782,000
                                                                     $3,081,000
 PWS Lead Service Line Replacement
                                                                        $16,000
                                                                       $552,000
                                                                       $536,000
                                                                     $1,801,000
                                                                     $1,756,000
                                                                       $-45,000
 Corrosion Control Technology
                                                                    $15,038,000
                                                                    $16,604,000
                                                                     $1,566,000
                                                                    $17,906,000
                                                                    $26,597,000
                                                                     $8,691,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                       $358,000
                                                                       $358,000
 Public Education and Outreach
                                                                        $70,000
                                                                     $1,593,000
                                                                     $1,522,000
                                                                       $214,000
                                                                     $2,605,000
                                                                     $2,390,000
 Rule Implementation and Administration
                                                                             $0
                                                                       $127,000
                                                                       $127,000
                                                                             $0
                                                                       $127,000
                                                                       $127,000
 Total Annual PWS Costs
                                                                    $18,411,000
                                                                    $23,759,000
                                                                     $5,349,000
                                                                    $23,623,000
                                                                    $38,224,000
                                                                    $14,602,000
 State Rule Implementation and Administration
                                                                       $328,000
                                                                     $1,478,000
                                                                     $1,150,000
                                                                       $385,000
                                                                     $1,671,000
                                                                     $1,286,000
 Household Lead Service Line Replacement
                                                                         $4,657
                                                                             $0
                                                                        $-4,657
                                                                       $363,000
                                                                             $0
                                                                      $-363,000
 Wastewater Treatment Plant Costs
                                                                         $3,081
                                                                        $29,000
                                                                        $26,000
                                                                        $22,000
                                                                       $112,000
                                                                        $90,000
 Total Annual Rule Costs
                                                                    $18,746,000
                                                                    $25,267,000
                                                                     $6,521,000
                                                                    $24,393,000
                                                                    $40,007,000
                                                                    $15,614,000
 Notes: Detail may not add exactly to total due to independent rounding.

 Exhibit C.138: National Annualized Rule Costs - Public CWS of Size 10,001 to 50,000 Treating Ground Water at 7% Discount Rate (2016$)

                               Low Cost Estimate
                               High Cost Estimate
 PWS Annual Costs
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
 Sampling
                                                                     $2,139,000
                                                                     $4,062,000
                                                                     $1,924,000
                                                                     $2,476,000
                                                                     $5,327,000
                                                                     $2,851,000
 PWS Lead Service Line Replacement
                                                                        $45,000
                                                                     $4,223,000
                                                                     $4,178,000
                                                                     $1,690,000
                                                                    $11,793,000
                                                                    $10,103,000
 Corrosion Control Technology
                                                                    $22,929,000
                                                                    $24,608,000
                                                                     $1,679,000
                                                                    $25,948,000
                                                                    $33,372,000
                                                                     $7,424,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
 Public Education and Outreach
                                                                        $51,000
                                                                     $2,745,000
                                                                     $2,695,000
                                                                       $191,000
                                                                     $2,246,000
                                                                     $2,054,000
 Rule Implementation and Administration
                                                                             $0
                                                                        $64,000
                                                                        $64,000
                                                                             $0
                                                                        $64,000
                                                                        $64,000
 Total Annual PWS Costs
                                                                    $25,164,000
                                                                    $35,703,000
                                                                    $10,540,000
                                                                    $30,304,000
                                                                    $52,801,000
                                                                    $22,496,000
 State Rule Implementation and Administration
                                                                       $196,000
                                                                       $945,000
                                                                       $749,000
                                                                       $228,000
                                                                     $1,023,000
                                                                       $795,000
 Household Lead Service Line Replacement
                                                                        $13,000
                                                                       $844,000
                                                                       $831,000
                                                                       $338,000
                                                                     $1,821,000
                                                                     $1,483,000
 Wastewater Treatment Plant Costs
                                                                        $24,000
                                                                        $61,000
                                                                        $37,000
                                                                        $74,000
                                                                       $166,000
                                                                        $93,000
 Total Annual Rule Costs
                                                                    $25,397,000
                                                                    $37,553,000
                                                                    $12,156,000
                                                                    $30,944,000
                                                                    $55,811,000
                                                                    $24,867,000
 Notes: Detail may not add exactly to total due to independent rounding.

 Exhibit C.139: National Annualized Rule Costs - Public CWS of Size 50,001 to 100,000 Treating Ground Water at 7% Discount Rate (2016$)

                               Low Cost Estimate
                               High Cost Estimate
 PWS Annual Costs
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
 Sampling
                                                                     $2,243,000
                                                                     $2,848,000
                                                                       $605,000
                                                                     $2,272,000
                                                                     $2,931,000
                                                                       $659,000
 PWS Lead Service Line Replacement
                                                                        $13,000
                                                                     $1,090,000
                                                                     $1,077,000
                                                                       $540,000
                                                                     $3,382,000
                                                                     $2,842,000
 Corrosion Control Technology
                                                                    $15,925,000
                                                                    $16,489,000
                                                                       $564,000
                                                                    $16,607,000
                                                                    $18,638,000
                                                                     $2,031,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
 Public Education and Outreach
                                                                        $11,000
                                                                       $743,000
                                                                       $732,000
                                                                        $55,000
                                                                       $676,000
                                                                       $621,000
 Rule Implementation and Administration
                                                                             $0
                                                                         $8,255
                                                                         $8,255
                                                                             $0
                                                                         $8,255
                                                                         $8,255
 Total Annual PWS Costs
                                                                    $18,192,000
                                                                    $21,178,000
                                                                     $2,986,000
                                                                    $19,474,000
                                                                    $25,635,000
                                                                     $6,161,000
 State Rule Implementation and Administration
                                                                       $220,000
                                                                       $519,000
                                                                       $299,000
                                                                       $222,000
                                                                       $520,000
                                                                       $298,000
 Household Lead Service Line Replacement
                                                                         $3,828
                                                                       $165,000
                                                                       $161,000
                                                                       $108,000
                                                                       $643,000
                                                                       $535,000
 Wastewater Treatment Plant Costs
                                                                         $8,434
                                                                        $40,000
                                                                        $32,000
                                                                        $43,000
                                                                       $109,000
                                                                        $66,000
 Total Annual Rule Costs
                                                                    $18,424,000
                                                                    $21,903,000
                                                                     $3,478,000
                                                                    $19,846,000
                                                                    $26,907,000
                                                                     $7,061,000
 Notes: Detail may not add exactly to total due to independent rounding.

 Exhibit C.140: National Annualized Rule Costs - Public CWS of Size 100,001 to 1,000,000 Treating Ground Water at 7% Discount Rate (2016$)

                               Low Cost Estimate
                               High Cost Estimate
 PWS Annual Costs
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
 Sampling
                                                                     $1,133,000
                                                                     $1,803,000
                                                                       $670,000
                                                                     $1,155,000
                                                                     $1,937,000
                                                                       $782,000
 PWS Lead Service Line Replacement
                                                                        $16,000
                                                                       $976,000
                                                                       $960,000
                                                                     $1,244,000
                                                                     $8,167,000
                                                                     $6,923,000
 Corrosion Control Technology
                                                                    $13,342,000
                                                                    $13,723,000
                                                                       $380,000
                                                                    $13,892,000
                                                                    $15,917,000
                                                                     $2,025,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
 Public Education and Outreach
                                                                        $14,000
                                                                       $681,000
                                                                       $668,000
                                                                        $60,000
                                                                     $1,184,000
                                                                     $1,124,000
 Rule Implementation and Administration
                                                                             $0
                                                                         $3,633
                                                                         $3,633
                                                                             $0
                                                                         $3,633
                                                                         $3,633
 Total Annual PWS Costs
                                                                    $14,505,000
                                                                    $17,187,000
                                                                     $2,682,000
                                                                    $16,351,000
                                                                    $27,209,000
                                                                    $10,858,000
 State Rule Implementation and Administration
                                                                       $144,000
                                                                       $382,000
                                                                       $238,000
                                                                       $144,000
                                                                       $387,000
                                                                       $243,000
 Household Lead Service Line Replacement
                                                                         $4,666
                                                                       $161,000
                                                                       $157,000
                                                                       $248,000
                                                                     $1,250,000
                                                                     $1,002,000
 Wastewater Treatment Plant Costs
                                                                        $26,000
                                                                        $82,000
                                                                        $56,000
                                                                        $65,000
                                                                       $243,000
                                                                       $178,000
 Total Annual Rule Costs
                                                                    $14,680,000
                                                                    $17,813,000
                                                                     $3,133,000
                                                                    $16,808,000
                                                                    $29,089,000
                                                                    $12,281,000
 Notes: Detail may not add exactly to total due to independent rounding.

 Exhibit C.141: National Annualized Rule Costs - Public CWS of Size Greater than 1,000,000 Treating Ground Water at 7% Discount Rate (2016$)

                               Low Cost Estimate
                               High Cost Estimate
 PWS Annual Costs
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
 Sampling
                                                                       $280,000
                                                                       $504,000
                                                                       $225,000
                                                                       $280,000
                                                                       $505,000
                                                                       $225,000
 PWS Lead Service Line Replacement
                                                                           $564
                                                                        $86,000
                                                                        $85,000
                                                                         $1,268
                                                                       $159,000
                                                                       $157,000
 Corrosion Control Technology
                                                                     $1,312,000
                                                                     $1,322,000
                                                                        $10,000
                                                                     $1,312,000
                                                                     $1,322,000
                                                                        $10,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
 Public Education and Outreach
                                                                             $0
                                                                        $86,000
                                                                        $86,000
                                                                             $0
                                                                        $87,000
                                                                        $87,000
 Rule Implementation and Administration
                                                                             $0
                                                                           $137
                                                                           $137
                                                                             $0
                                                                           $137
                                                                           $137
 Total Annual PWS Costs
                                                                     $1,592,000
                                                                     $1,998,000
                                                                       $407,000
                                                                     $1,593,000
                                                                     $2,073,000
                                                                       $480,000
 State Rule Implementation and Administration
                                                                        $98,000
                                                                       $293,000
                                                                       $196,000
                                                                        $98,000
                                                                       $293,000
                                                                       $196,000
 Household Lead Service Line Replacement
                                                                           $161
                                                                        $11,000
                                                                        $11,000
                                                                           $252
                                                                        $16,000
                                                                        $16,000
 Wastewater Treatment Plant Costs
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
 Total Annual Rule Costs
                                                                     $1,690,000
                                                                     $2,303,000
                                                                       $613,000
                                                                     $1,691,000
                                                                     $2,382,000
                                                                       $692,000
 Notes: Detail may not add exactly to total due to independent rounding.

 Exhibit C.142: National Annualized Rule Costs - Public CWS of Size 100 and Fewer Treating Surface Water at 7% Discount Rate (2016$)

                               Low Cost Estimate
                               High Cost Estimate
 PWS Annual Costs
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
 Sampling
                                                                       $139,000
                                                                       $219,000
                                                                        $79,000
                                                                       $154,000
                                                                       $201,000
                                                                        $47,000
 PWS Lead Service Line Replacement
                                                                           $122
                                                                        $66,000
                                                                        $66,000
                                                                        $25,000
                                                                       $211,000
                                                                       $186,000
 Corrosion Control Technology
                                                                       $723,000
                                                                       $751,000
                                                                        $29,000
                                                                       $856,000
                                                                       $804,000
                                                                       $-52,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                        $25,000
                                                                        $25,000
                                                                             $0
                                                                       $191,000
                                                                       $191,000
 Public Education and Outreach
                                                                           $459
                                                                       $153,000
                                                                       $152,000
                                                                         $2,127
                                                                       $162,000
                                                                       $160,000
 Rule Implementation and Administration
                                                                             $0
                                                                        $32,000
                                                                        $32,000
                                                                             $0
                                                                        $32,000
                                                                        $32,000
 Total Annual PWS Costs
                                                                       $863,000
                                                                     $1,246,000
                                                                       $383,000
                                                                     $1,038,000
                                                                     $1,602,000
                                                                       $564,000
 State Rule Implementation and Administration
                                                                       $133,000
                                                                       $549,000
                                                                       $417,000
                                                                       $144,000
                                                                       $573,000
                                                                       $428,000
 Household Lead Service Line Replacement
                                                                            $30
                                                                             $0
                                                                           $-30
                                                                         $5,030
                                                                             $0
                                                                        $-5,030
 Wastewater Treatment Plant Costs
                                                                             $9
                                                                            $91
                                                                            $82
                                                                           $118
                                                                           $182
                                                                            $64
 Total Annual Rule Costs
                                                                       $996,000
                                                                     $1,795,000
                                                                       $800,000
                                                                     $1,187,000
                                                                     $2,174,000
                                                                       $987,000
 Notes: Detail may not add exactly to total due to independent rounding.

 Exhibit C.143: National Annualized Rule Costs - Public CWS of Size 101 to 500 Treating Surface Water at 7% Discount Rate (2016$)

                               Low Cost Estimate
                               High Cost Estimate
 PWS Annual Costs
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
 Sampling
                                                                       $503,000
                                                                       $850,000
                                                                       $347,000
                                                                       $557,000
                                                                       $836,000
                                                                       $279,000
 PWS Lead Service Line Replacement
                                                                         $2,645
                                                                       $349,000
                                                                       $346,000
                                                                       $458,000
                                                                       $601,000
                                                                       $143,000
 Corrosion Control Technology
                                                                     $2,120,000
                                                                     $2,333,000
                                                                       $213,000
                                                                     $2,504,000
                                                                     $4,122,000
                                                                     $1,618,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                        $58,000
                                                                        $58,000
                                                                             $0
                                                                     $1,182,000
                                                                     $1,182,000
 Public Education and Outreach
                                                                         $1,753
                                                                       $416,000
                                                                       $414,000
                                                                         $7,017
                                                                       $579,000
                                                                       $572,000
 Rule Implementation and Administration
                                                                             $0
                                                                        $82,000
                                                                        $82,000
                                                                             $0
                                                                        $82,000
                                                                        $82,000
 Total Annual PWS Costs
                                                                     $2,627,000
                                                                     $4,086,000
                                                                     $1,459,000
                                                                     $3,526,000
                                                                     $7,402,000
                                                                     $3,877,000
 State Rule Implementation and Administration
                                                                       $204,000
                                                                       $960,000
                                                                       $757,000
                                                                       $238,000
                                                                     $1,011,000
                                                                       $773,000
 Household Lead Service Line Replacement
                                                                           $766
                                                                             $0
                                                                          $-766
                                                                        $92,000
                                                                             $0
                                                                       $-92,000
 Wastewater Treatment Plant Costs
                                                                            $92
                                                                         $1,188
                                                                         $1,096
                                                                           $877
                                                                         $2,329
                                                                         $1,452
 Total Annual Rule Costs
                                                                     $2,832,000
                                                                     $5,048,000
                                                                     $2,216,000
                                                                     $3,858,000
                                                                     $8,416,000
                                                                     $4,558,000
 Notes: Detail may not add exactly to total due to independent rounding.

 Exhibit C.144: National Annualized Rule Costs - Public CWS of Size 501 to 1,000 Treating Surface Water at 7% Discount Rate (2016$)

                               Low Cost Estimate
                               High Cost Estimate
 PWS Annual Costs
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
 Sampling
                                                                       $560,000
                                                                       $936,000
                                                                       $376,000
                                                                       $617,000
                                                                     $1,256,000
                                                                       $639,000
 PWS Lead Service Line Replacement
                                                                         $3,996
                                                                       $293,000
                                                                       $289,000
                                                                       $738,000
                                                                       $734,000
                                                                        $-4,291
 Corrosion Control Technology
                                                                     $2,011,000
                                                                     $2,256,000
                                                                       $245,000
                                                                     $2,346,000
                                                                     $5,621,000
                                                                     $3,276,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                        $81,000
                                                                        $81,000
 Public Education and Outreach
                                                                         $1,541
                                                                       $317,000
                                                                       $316,000
                                                                         $6,000
                                                                       $726,000
                                                                       $720,000
 Rule Implementation and Administration
                                                                             $0
                                                                        $58,000
                                                                        $58,000
                                                                             $0
                                                                        $58,000
                                                                        $58,000
 Total Annual PWS Costs
                                                                     $2,577,000
                                                                     $3,860,000
                                                                     $1,283,000
                                                                     $3,707,000
                                                                     $8,475,000
                                                                     $4,769,000
 State Rule Implementation and Administration
                                                                       $173,000
                                                                       $771,000
                                                                       $598,000
                                                                       $196,000
                                                                       $848,000
                                                                       $651,000
 Household Lead Service Line Replacement
                                                                         $1,174
                                                                             $0
                                                                        $-1,174
                                                                       $149,000
                                                                             $0
                                                                      $-149,000
 Wastewater Treatment Plant Costs
                                                                           $154
                                                                         $1,655
                                                                         $1,500
                                                                         $1,444
                                                                         $9,750
                                                                         $8,307
 Total Annual Rule Costs
                                                                     $2,751,000
                                                                     $4,632,000
                                                                     $1,882,000
                                                                     $4,054,000
                                                                     $9,333,000
                                                                     $5,279,000
 Notes: Detail may not add exactly to total due to independent rounding.

 Exhibit C.145: National Annualized Rule Costs - Public CWS of Size 1,001 to 3,300 Treating Surface Water at 7% Discount Rate (2016$)

                               Low Cost Estimate
                               High Cost Estimate
 PWS Annual Costs
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
 Sampling
                                                                     $1,140,000
                                                                     $1,916,000
                                                                       $775,000
                                                                     $1,297,000
                                                                     $2,951,000
                                                                     $1,654,000
 PWS Lead Service Line Replacement
                                                                        $27,000
                                                                       $539,000
                                                                       $512,000
                                                                     $2,087,000
                                                                     $1,548,000
                                                                      $-539,000
 Corrosion Control Technology
                                                                     $7,255,000
                                                                     $8,376,000
                                                                     $1,121,000
                                                                     $8,135,000
                                                                    $17,817,000
                                                                     $9,682,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
 Public Education and Outreach
                                                                         $6,379
                                                                       $927,000
                                                                       $921,000
                                                                        $25,000
                                                                     $1,702,000
                                                                     $1,677,000
 Rule Implementation and Administration
                                                                             $0
                                                                       $138,000
                                                                       $138,000
                                                                             $0
                                                                       $138,000
                                                                       $138,000
 Total Annual PWS Costs
                                                                     $8,428,000
                                                                    $11,896,000
                                                                     $3,468,000
                                                                    $11,544,000
                                                                    $24,156,000
                                                                    $12,612,000
 State Rule Implementation and Administration
                                                                       $285,000
                                                                     $1,480,000
                                                                     $1,194,000
                                                                       $338,000
                                                                     $1,710,000
                                                                     $1,372,000
 Household Lead Service Line Replacement
                                                                         $7,950
                                                                             $0
                                                                        $-7,950
                                                                       $422,000
                                                                             $0
                                                                      $-422,000
 Wastewater Treatment Plant Costs
                                                                         $2,201
                                                                        $18,000
                                                                        $16,000
                                                                        $15,000
                                                                        $72,000
                                                                        $57,000
 Total Annual Rule Costs
                                                                     $8,724,000
                                                                    $13,394,000
                                                                     $4,670,000
                                                                    $12,319,000
                                                                    $25,938,000
                                                                    $13,619,000
 Notes: Detail may not add exactly to total due to independent rounding.

 Exhibit C.146: National Annualized Rule Costs - Public CWS of Size 3,301 to 10,000 Treating Surface Water at 7% Discount Rate (2016$)

                               Low Cost Estimate
                               High Cost Estimate
 PWS Annual Costs
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
 Sampling
                                                                     $2,553,000
                                                                     $4,198,000
                                                                     $1,645,000
                                                                     $2,918,000
                                                                     $6,399,000
                                                                     $3,481,000
 PWS Lead Service Line Replacement
                                                                        $47,000
                                                                       $921,000
                                                                       $874,000
                                                                     $3,813,000
                                                                     $2,767,000
                                                                    $-1,046,000
 Corrosion Control Technology
                                                                    $16,538,000
                                                                    $18,264,000
                                                                     $1,726,000
                                                                    $18,184,000
                                                                    $30,529,000
                                                                    $12,346,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
 Public Education and Outreach
                                                                        $54,000
                                                                     $1,818,000
                                                                     $1,765,000
                                                                       $190,000
                                                                     $3,487,000
                                                                     $3,297,000
 Rule Implementation and Administration
                                                                             $0
                                                                       $106,000
                                                                       $106,000
                                                                             $0
                                                                       $106,000
                                                                       $106,000
 Total Annual PWS Costs
                                                                    $19,191,000
                                                                    $25,307,000
                                                                     $6,116,000
                                                                    $25,105,000
                                                                    $43,289,000
                                                                    $18,184,000
 State Rule Implementation and Administration
                                                                       $317,000
                                                                     $1,562,000
                                                                     $1,244,000
                                                                       $372,000
                                                                     $1,832,000
                                                                     $1,460,000
 Household Lead Service Line Replacement
                                                                        $14,000
                                                                             $0
                                                                       $-14,000
                                                                       $770,000
                                                                             $0
                                                                      $-770,000
 Wastewater Treatment Plant Costs
                                                                         $9,607
                                                                        $45,000
                                                                        $35,000
                                                                        $37,000
                                                                       $164,000
                                                                       $127,000
 Total Annual Rule Costs
                                                                    $19,532,000
                                                                    $26,914,000
                                                                     $7,382,000
                                                                    $26,283,000
                                                                    $45,286,000
                                                                    $19,002,000
 Notes: Detail may not add exactly to total due to independent rounding.

 Exhibit C.147: National Annualized Rule Costs - Public CWS of Size 10,001 to 50,000 Treating Surface Water at 7% Discount Rate (2016$)

                               Low Cost Estimate
                               High Cost Estimate
 PWS Annual Costs
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
 Sampling
                                                                     $3,372,000
                                                                     $7,107,000
                                                                     $3,736,000
                                                                     $3,874,000
                                                                     $9,188,000
                                                                     $5,315,000
 PWS Lead Service Line Replacement
                                                                       $140,000
                                                                    $15,917,000
                                                                    $15,777,000
                                                                     $5,161,000
                                                                    $36,583,000
                                                                    $31,422,000
 Corrosion Control Technology
                                                                    $38,996,000
                                                                    $42,931,000
                                                                     $3,935,000
                                                                    $41,917,000
                                                                    $56,765,000
                                                                    $14,848,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
 Public Education and Outreach
                                                                        $58,000
                                                                     $6,994,000
                                                                     $6,936,000
                                                                       $312,000
                                                                     $5,374,000
                                                                     $5,062,000
 Rule Implementation and Administration
                                                                             $0
                                                                       $102,000
                                                                       $102,000
                                                                             $0
                                                                       $102,000
                                                                       $102,000
 Total Annual PWS Costs
                                                                    $42,566,000
                                                                    $73,051,000
                                                                    $30,485,000
                                                                    $51,264,000
                                                                   $108,013,000
                                                                    $56,749,000
 State Rule Implementation and Administration
                                                                       $301,000
                                                                     $1,663,000
                                                                     $1,362,000
                                                                       $359,000
                                                                     $1,830,000
                                                                     $1,470,000
 Household Lead Service Line Replacement
                                                                        $41,000
                                                                     $3,484,000
                                                                     $3,443,000
                                                                     $1,032,000
                                                                     $5,927,000
                                                                     $4,894,000
 Wastewater Treatment Plant Costs
                                                                        $11,000
                                                                       $173,000
                                                                       $162,000
                                                                       $169,000
                                                                       $422,000
                                                                       $253,000
 Total Annual Rule Costs
                                                                    $42,918,000
                                                                    $78,371,000
                                                                    $35,452,000
                                                                    $52,824,000
                                                                   $116,191,000
                                                                    $63,367,000
 Notes: Detail may not add exactly to total due to independent rounding.

 Exhibit C.148: National Annualized Rule Costs - Public CWS of Size 50,001 to 100,000 Treating Surface Water at 7% Discount Rate (2016$)

                               Low Cost Estimate
                               High Cost Estimate
 PWS Annual Costs
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
 Sampling
                                                                     $1,745,000
                                                                     $3,286,000
                                                                     $1,541,000
                                                                     $1,822,000
                                                                     $3,475,000
                                                                     $1,653,000
 PWS Lead Service Line Replacement
                                                                        $47,000
                                                                     $3,800,000
                                                                     $3,753,000
                                                                     $1,800,000
                                                                    $10,180,000
                                                                     $8,379,000
 Corrosion Control Technology
                                                                    $24,296,000
                                                                    $25,760,000
                                                                     $1,464,000
                                                                    $25,190,000
                                                                    $29,183,000
                                                                     $3,993,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
 Public Education and Outreach
                                                                        $25,000
                                                                     $2,025,000
                                                                     $2,000,000
                                                                       $145,000
                                                                     $1,821,000
                                                                     $1,677,000
 Rule Implementation and Administration
                                                                             $0
                                                                        $22,000
                                                                        $22,000
                                                                             $0
                                                                        $22,000
                                                                        $22,000
 Total Annual PWS Costs
                                                                    $26,114,000
                                                                    $34,894,000
                                                                     $8,780,000
                                                                    $28,957,000
                                                                    $44,680,000
                                                                    $15,723,000
 State Rule Implementation and Administration
                                                                       $434,000
                                                                       $906,000
                                                                       $472,000
                                                                       $439,000
                                                                       $906,000
                                                                       $468,000
 Household Lead Service Line Replacement
                                                                        $14,000
                                                                       $741,000
                                                                       $727,000
                                                                       $360,000
                                                                     $2,051,000
                                                                     $1,691,000
 Wastewater Treatment Plant Costs
                                                                         $8,633
                                                                        $96,000
                                                                        $87,000
                                                                        $79,000
                                                                       $281,000
                                                                       $202,000
 Total Annual Rule Costs
                                                                    $26,570,000
                                                                    $36,636,000
                                                                    $10,066,000
                                                                    $29,835,000
                                                                    $47,918,000
                                                                    $18,083,000
 Notes: Detail may not add exactly to total due to independent rounding.

 Exhibit C.149: National Annualized Rule Costs - Public CWS of Size 100,001 to 1,000,000 Treating Surface Water at 7% Discount Rate (2016$)

                               Low Cost Estimate
                               High Cost Estimate
 PWS Annual Costs
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
 Sampling
                                                                     $2,489,000
                                                                     $6,574,000
                                                                     $4,085,000
                                                                     $2,609,000
                                                                     $7,327,000
                                                                     $4,718,000
 PWS Lead Service Line Replacement
                                                                       $159,000
                                                                     $7,507,000
                                                                     $7,347,000
                                                                     $9,578,000
                                                                    $60,381,000
                                                                    $50,803,000
 Corrosion Control Technology
                                                                    $57,594,000
                                                                    $59,923,000
                                                                     $2,329,000
                                                                    $59,716,000
                                                                    $69,092,000
                                                                     $9,376,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
 Public Education and Outreach
                                                                        $66,000
                                                                     $4,546,000
                                                                     $4,481,000
                                                                       $362,000
                                                                     $7,938,000
                                                                     $7,575,000
 Rule Implementation and Administration
                                                                             $0
                                                                        $20,000
                                                                        $20,000
                                                                             $0
                                                                        $20,000
                                                                        $20,000
 Total Annual PWS Costs
                                                                    $60,309,000
                                                                    $78,570,000
                                                                    $18,262,000
                                                                    $72,265,000
                                                                   $144,758,000
                                                                    $72,492,000
 State Rule Implementation and Administration
                                                                       $380,000
                                                                       $830,000
                                                                       $450,000
                                                                       $384,000
                                                                       $859,000
                                                                       $475,000
 Household Lead Service Line Replacement
                                                                        $46,000
                                                                     $1,581,000
                                                                     $1,535,000
                                                                     $1,907,000
                                                                     $9,401,000
                                                                     $7,493,000
 Wastewater Treatment Plant Costs
                                                                        $15,000
                                                                       $220,000
                                                                       $206,000
                                                                       $387,000
                                                                     $1,039,000
                                                                       $652,000
 Total Annual Rule Costs
                                                                    $60,749,000
                                                                    $81,201,000
                                                                    $20,452,000
                                                                    $74,943,000
                                                                   $156,056,000
                                                                    $81,113,000
 Notes: Detail may not add exactly to total due to independent rounding.

 Exhibit C.150: National Annualized Rule Costs - Public CWS of Size Greater than 1,000,000 Treating Surface Water at 7% Discount Rate (2016$)

                               Low Cost Estimate
                               High Cost Estimate
 PWS Annual Costs
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
 Sampling
                                                                       $230,000
                                                                     $2,402,000
                                                                     $2,173,000
                                                                       $230,000
                                                                     $2,407,000
                                                                     $2,177,000
 PWS Lead Service Line Replacement
                                                                        $36,000
                                                                     $1,986,000
                                                                     $1,950,000
                                                                        $88,000
                                                                     $3,488,000
                                                                     $3,401,000
 Corrosion Control Technology
                                                                    $25,734,000
                                                                    $26,175,000
                                                                       $440,000
                                                                    $25,756,000
                                                                    $26,267,000
                                                                       $511,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
 Public Education and Outreach
                                                                             $0
                                                                       $700,000
                                                                       $700,000
                                                                             $0
                                                                       $706,000
                                                                       $706,000
 Rule Implementation and Administration
                                                                             $0
                                                                         $1,234
                                                                         $1,234
                                                                             $0
                                                                         $1,234
                                                                         $1,234
 Total Annual PWS Costs
                                                                    $26,000,000
                                                                    $31,264,000
                                                                     $5,264,000
                                                                    $26,074,000
                                                                    $32,870,000
                                                                     $6,796,000
 State Rule Implementation and Administration
                                                                       $113,000
                                                                       $321,000
                                                                       $207,000
                                                                       $113,000
                                                                       $321,000
                                                                       $207,000
 Household Lead Service Line Replacement
                                                                        $10,000
                                                                       $320,000
                                                                       $309,000
                                                                        $17,000
                                                                       $364,000
                                                                       $347,000
 Wastewater Treatment Plant Costs
                                                                        $84,000
                                                                       $773,000
                                                                       $689,000
                                                                        $84,000
                                                                       $731,000
                                                                       $647,000
 Total Annual Rule Costs
                                                                    $26,208,000
                                                                    $32,677,000
                                                                     $6,469,000
                                                                    $26,288,000
                                                                    $34,285,000
                                                                     $7,997,000
 Notes: Detail may not add exactly to total due to independent rounding.

 Exhibit C.151: National Annualized Rule Costs - Public NTNCWS of Size 100 and Fewer Treating Ground Water at 7% Discount Rate (2016$)

                               Low Cost Estimate
                               High Cost Estimate
 PWS Annual Costs
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
 Sampling
                                                                       $817,000
                                                                     $1,368,000
                                                                       $551,000
                                                                       $924,000
                                                                     $1,375,000
                                                                       $451,000
 PWS Lead Service Line Replacement
                                                                           $412
                                                                        $87,000
                                                                        $87,000
                                                                         $2,102
                                                                        $90,000
                                                                        $88,000
 Corrosion Control Technology
                                                                     $3,135,000
                                                                     $2,304,000
                                                                      $-831,000
                                                                     $5,416,000
                                                                     $2,461,000
                                                                    $-2,955,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                       $226,000
                                                                       $226,000
                                                                             $0
                                                                       $552,000
                                                                       $552,000
 Public Education and Outreach
                                                                         $2,885
                                                                       $134,000
                                                                       $131,000
                                                                         $7,543
                                                                       $137,000
                                                                       $129,000
 Rule Implementation and Administration
                                                                             $0
                                                                       $510,000
                                                                       $510,000
                                                                             $0
                                                                       $510,000
                                                                       $510,000
 Total Annual PWS Costs
                                                                     $3,955,000
                                                                     $4,628,000
                                                                       $673,000
                                                                     $6,350,000
                                                                     $5,125,000
                                                                    $-1,225,000
 State Rule Implementation and Administration
                                                                       $513,000
                                                                     $1,612,000
                                                                     $1,099,000
                                                                       $609,000
                                                                     $1,720,000
                                                                     $1,112,000
 Household Lead Service Line Replacement
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
 Wastewater Treatment Plant Costs
                                                                           $401
                                                                           $296
                                                                          $-105
                                                                         $1,084
                                                                           $267
                                                                          $-817
 Total Annual Rule Costs
                                                                     $4,468,000
                                                                     $6,241,000
                                                                     $1,773,000
                                                                     $6,960,000
                                                                     $6,846,000
                                                                      $-114,000
 Notes: Detail may not add exactly to total due to independent rounding.

 Exhibit C.152: National Annualized Rule Costs - Public NTNCWS of Size 101 to 500 Treating Ground Water at 7% Discount Rate (2016$)

                               Low Cost Estimate
                               High Cost Estimate
 PWS Annual Costs
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
 Sampling
                                                                       $807,000
                                                                     $1,419,000
                                                                       $613,000
                                                                       $914,000
                                                                     $1,465,000
                                                                       $551,000
 PWS Lead Service Line Replacement
                                                                            $51
                                                                        $69,000
                                                                        $69,000
                                                                         $2,962
                                                                        $70,000
                                                                        $67,000
 Corrosion Control Technology
                                                                     $3,316,000
                                                                     $2,767,000
                                                                      $-548,000
                                                                     $5,186,000
                                                                     $2,999,000
                                                                    $-2,187,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                       $321,000
                                                                       $321,000
                                                                             $0
                                                                       $841,000
                                                                       $841,000
 Public Education and Outreach
                                                                         $2,124
                                                                       $102,000
                                                                       $100,000
                                                                         $6,084
                                                                       $106,000
                                                                        $99,000
 Rule Implementation and Administration
                                                                             $0
                                                                       $390,000
                                                                       $390,000
                                                                             $0
                                                                       $390,000
                                                                       $390,000
 Total Annual PWS Costs
                                                                     $4,124,000
                                                                     $5,068,000
                                                                       $944,000
                                                                     $6,109,000
                                                                     $5,869,000
                                                                      $-240,000
 State Rule Implementation and Administration
                                                                       $456,000
                                                                     $1,401,000
                                                                       $945,000
                                                                       $555,000
                                                                     $1,498,000
                                                                       $943,000
 Household Lead Service Line Replacement
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
 Wastewater Treatment Plant Costs
                                                                         $1,450
                                                                           $307
                                                                        $-1,143
                                                                         $3,075
                                                                         $1,820
                                                                        $-1,255
 Total Annual Rule Costs
                                                                     $4,582,000
                                                                     $6,470,000
                                                                     $1,888,000
                                                                     $6,668,000
                                                                     $7,369,000
                                                                       $701,000
 Notes: Detail may not add exactly to total due to independent rounding.

 Exhibit C.153: National Annualized Rule Costs - Public NTNCWS of Size 501 to 1,000 Treating Ground Water at 7% Discount Rate (2016$)

                               Low Cost Estimate
                               High Cost Estimate
 PWS Annual Costs
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
 Sampling
                                                                       $293,000
                                                                       $578,000
                                                                       $285,000
                                                                       $331,000
                                                                       $599,000
                                                                       $269,000
 PWS Lead Service Line Replacement
                                                                             $2
                                                                        $17,000
                                                                        $17,000
                                                                           $525
                                                                        $20,000
                                                                        $19,000
 Corrosion Control Technology
                                                                     $1,133,000
                                                                       $969,000
                                                                      $-164,000
                                                                     $1,650,000
                                                                     $1,112,000
                                                                      $-537,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                       $161,000
                                                                       $161,000
                                                                             $0
                                                                       $398,000
                                                                       $398,000
 Public Education and Outreach
                                                                           $506
                                                                        $25,000
                                                                        $25,000
                                                                         $1,442
                                                                        $26,000
                                                                        $25,000
 Rule Implementation and Administration
                                                                             $0
                                                                        $95,000
                                                                        $95,000
                                                                             $0
                                                                        $95,000
                                                                        $95,000
 Total Annual PWS Costs
                                                                     $1,426,000
                                                                     $1,846,000
                                                                       $419,000
                                                                     $1,982,000
                                                                     $2,250,000
                                                                       $268,000
 State Rule Implementation and Administration
                                                                       $190,000
                                                                       $600,000
                                                                       $410,000
                                                                       $215,000
                                                                       $632,000
                                                                       $417,000
 Household Lead Service Line Replacement
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
 Wastewater Treatment Plant Costs
                                                                           $425
                                                                            $60
                                                                          $-365
                                                                         $1,642
                                                                         $1,309
                                                                          $-332
 Total Annual Rule Costs
                                                                     $1,617,000
                                                                     $2,446,000
                                                                       $829,000
                                                                     $2,199,000
                                                                     $2,883,000
                                                                       $684,000
 Notes: Detail may not add exactly to total due to independent rounding.

 Exhibit C.154: National Annualized Rule Costs - Public NTNCWS of Size 1,001 to 3,300 Treating Ground Water at 7% Discount Rate (2016$)

                               Low Cost Estimate
                               High Cost Estimate
 PWS Annual Costs
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
 Sampling
                                                                       $174,000
                                                                       $346,000
                                                                       $172,000
                                                                       $192,000
                                                                       $360,000
                                                                       $168,000
 PWS Lead Service Line Replacement
                                                                             $1
                                                                         $8,776
                                                                         $8,775
                                                                           $899
                                                                        $12,000
                                                                        $11,000
 Corrosion Control Technology
                                                                       $813,000
                                                                       $737,000
                                                                       $-76,000
                                                                     $1,112,000
                                                                       $828,000
                                                                      $-284,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                       $110,000
                                                                       $110,000
                                                                             $0
                                                                       $312,000
                                                                       $312,000
 Public Education and Outreach
                                                                           $256
                                                                        $13,000
                                                                        $12,000
                                                                           $755
                                                                        $13,000
                                                                        $12,000
 Rule Implementation and Administration
                                                                             $0
                                                                        $48,000
                                                                        $48,000
                                                                             $0
                                                                        $48,000
                                                                        $48,000
 Total Annual PWS Costs
                                                                       $988,000
                                                                     $1,262,000
                                                                       $274,000
                                                                     $1,306,000
                                                                     $1,572,000
                                                                       $266,000
 State Rule Implementation and Administration
                                                                       $152,000
                                                                       $463,000
                                                                       $311,000
                                                                       $165,000
                                                                       $480,000
                                                                       $315,000
 Household Lead Service Line Replacement
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
 Wastewater Treatment Plant Costs
                                                                           $652
                                                                           $212
                                                                          $-440
                                                                         $2,011
                                                                         $2,044
                                                                            $33
 Total Annual Rule Costs
                                                                     $1,140,000
                                                                     $1,726,000
                                                                       $585,000
                                                                     $1,473,000
                                                                     $2,054,000
                                                                       $581,000
 Notes: Detail may not add exactly to total due to independent rounding.

 Exhibit C.155: National Annualized Rule Costs - Public NTNCWS of Size 3,301 to 10,000 Treating Ground Water at 7% Discount Rate (2016$)

                               Low Cost Estimate
                               High Cost Estimate
 PWS Annual Costs
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
 Sampling
                                                                        $37,000
                                                                        $86,000
                                                                        $49,000
                                                                        $41,000
                                                                        $94,000
                                                                        $53,000
 PWS Lead Service Line Replacement
                                                                             $0
                                                                         $2,140
                                                                         $2,139
                                                                            $95
                                                                         $2,658
                                                                         $2,562
 Corrosion Control Technology
                                                                       $288,000
                                                                       $286,000
                                                                        $-2,456
                                                                       $356,000
                                                                       $358,000
                                                                         $1,611
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                        $21,000
                                                                        $21,000
                                                                             $0
                                                                        $58,000
                                                                        $58,000
 Public Education and Outreach
                                                                            $40
                                                                         $1,952
                                                                         $1,913
                                                                           $114
                                                                         $2,105
                                                                         $1,991
 Rule Implementation and Administration
                                                                             $0
                                                                         $7,265
                                                                         $7,265
                                                                             $0
                                                                         $7,265
                                                                         $7,265
 Total Annual PWS Costs
                                                                       $326,000
                                                                       $405,000
                                                                        $79,000
                                                                       $397,000
                                                                       $522,000
                                                                       $124,000
 State Rule Implementation and Administration
                                                                       $106,000
                                                                       $318,000
                                                                       $212,000
                                                                       $108,000
                                                                       $320,000
                                                                       $212,000
 Household Lead Service Line Replacement
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
 Wastewater Treatment Plant Costs
                                                                           $268