$23,926,000
                                                                    $42,579,000
                                                                    $74,505,000
                                                                    $31,926,000
 PWS Lead Service Line Replacement
                                                                       $627,000
                                                                    $44,230,000
                                                                    $43,603,000
                                                                    $27,270,000
                                                                   $140,090,000
                                                                   $112,820,000
 Corrosion Control Technology
                                                                   $333,031,000
                                                                   $354,200,000
                                                                    $21,170,000
                                                                   $369,156,000
                                                                   $460,538,000
                                                                    $91,382,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                     $2,521,000
                                                                     $2,521,000
                                                                             $0
                                                                    $17,978,000
                                                                    $17,978,000
 Public Education and Outreach
                                                                       $341,000
                                                                    $36,905,000
                                                                    $36,565,000
                                                                     $1,454,000
                                                                    $45,153,000
                                                                    $43,698,000
 Rule Implementation and Administration
                                                                             $0
                                                                     $1,891,000
                                                                     $1,891,000
                                                                             $0
                                                                     $1,891,000
                                                                     $1,891,000
 Total Annual PWS Costs
                                                                   $373,663,000
                                                                   $503,338,000
                                                                   $129,675,000
                                                                   $440,459,000
                                                                   $740,155,000
                                                                   $299,696,000
 State Rule Implementation and Administration
                                                                     $5,156,000
                                                                    $22,906,000
                                                                    $17,750,000
                                                                     $5,967,000
                                                                    $24,753,000
                                                                    $18,786,000
 Household Lead Service Line Replacement
                                                                       $182,000
                                                                     $8,100,000
                                                                     $7,918,000
                                                                     $5,466,000
                                                                    $19,542,000
                                                                    $14,076,000
 Wastewater Treatment Plant Costs
                                                                       $157,000
                                                                     $1,311,000
                                                                     $1,154,000
                                                                       $685,000
                                                                     $2,514,000
                                                                     $1,828,000
 Total Annual Rule Costs
                                                                   $379,158,000
                                                                   $535,655,000
                                                                   $156,497,000
                                                                   $452,577,000
                                                                   $786,964,000
                                                                   $334,386,000
 Notes: Detail may not add exactly to total due to independent rounding.

 Exhibit C.58: National Annualized Rule Costs - NTNCWS at 3% Discount Rate (2016$)

                               Low Cost Estimate
                               High Cost Estimate
 PWS Annual Costs
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
 Sampling
                                                                     $2,297,000
                                                                     $4,153,000
                                                                     $1,856,000
                                                                     $2,520,000
                                                                     $4,234,000
                                                                     $1,714,000
 PWS Lead Service Line Replacement
                                                                           $671
                                                                       $142,000
                                                                       $141,000
                                                                         $7,207
                                                                       $152,000
                                                                       $145,000
 Corrosion Control Technology
                                                                    $11,452,000
                                                                     $9,694,000
                                                                    $-1,758,000
                                                                    $16,525,000
                                                                    $10,549,000
                                                                    $-5,976,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                       $897,000
                                                                       $897,000
                                                                             $0
                                                                     $2,260,000
                                                                     $2,260,000
 Public Education and Outreach
                                                                         $4,446
                                                                       $301,000
                                                                       $297,000
                                                                        $12,000
                                                                       $308,000
                                                                       $295,000
 Rule Implementation and Administration
                                                                             $0
                                                                       $685,000
                                                                       $685,000
                                                                             $0
                                                                       $685,000
                                                                       $685,000
 Total Annual PWS Costs
                                                                    $13,755,000
                                                                    $15,872,000
                                                                     $2,117,000
                                                                    $19,064,000
                                                                    $18,188,000
                                                                      $-876,000
 State Rule Implementation and Administration
                                                                     $1,090,000
                                                                     $3,232,000
                                                                     $2,142,000
                                                                     $1,272,000
                                                                     $3,426,000
                                                                     $2,154,000
 Household Lead Service Line Replacement
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
 Wastewater Treatment Plant Costs
                                                                         $3,677
                                                                         $2,267
                                                                        $-1,409
                                                                         $9,122
                                                                         $9,278
                                                                           $156
 Total Annual Rule Costs
                                                                    $14,849,000
                                                                    $19,106,000
                                                                     $4,258,000
                                                                    $20,345,000
                                                                    $21,624,000
                                                                     $1,279,000
 Notes: Detail may not add exactly to total due to independent rounding.

 Exhibit C.59: National Annualized Rule Costs - Private PWS at 3% Discount Rate (2016$)

                               Low Cost Estimate
                               High Cost Estimate
 PWS Annual Costs
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
 Sampling
                                                                    $10,594,000
                                                                    $14,853,000
                                                                     $4,259,000
                                                                    $11,362,000
                                                                    $15,877,000
                                                                     $4,515,000
 PWS Lead Service Line Replacement
                                                                        $81,000
                                                                     $5,863,000
                                                                     $5,782,000
                                                                     $4,093,000
                                                                    $18,614,000
                                                                    $14,521,000
 Corrosion Control Technology
                                                                    $47,022,000
                                                                    $48,453,000
                                                                     $1,432,000
                                                                    $59,257,000
                                                                    $63,375,000
                                                                     $4,118,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                     $1,875,000
                                                                     $1,875,000
                                                                             $0
                                                                    $11,583,000
                                                                    $11,583,000
 Public Education and Outreach
                                                                        $56,000
                                                                     $8,622,000
                                                                     $8,566,000
                                                                       $239,000
                                                                    $10,209,000
                                                                     $9,971,000
 Rule Implementation and Administration
                                                                             $0
                                                                       $889,000
                                                                       $889,000
                                                                             $0
                                                                       $889,000
                                                                       $889,000
 Total Annual PWS Costs
                                                                    $57,754,000
                                                                    $80,555,000
                                                                    $22,801,000
                                                                    $74,950,000
                                                                   $120,546,000
                                                                    $45,596,000
 State Rule Implementation and Administration
                                                                     $2,039,000
                                                                     $9,120,000
                                                                     $7,081,000
                                                                     $2,383,000
                                                                     $9,566,000
                                                                     $7,184,000
 Household Lead Service Line Replacement
                                                                        $23,000
                                                                     $1,126,000
                                                                     $1,103,000
                                                                       $821,000
                                                                     $2,350,000
                                                                     $1,530,000
 Wastewater Treatment Plant Costs
                                                                         $2,930
                                                                        $65,000
                                                                        $62,000
                                                                        $51,000
                                                                       $151,000
                                                                       $100,000
 Total Annual Rule Costs
                                                                    $59,819,000
                                                                    $90,866,000
                                                                    $31,047,000
                                                                    $78,204,000
                                                                   $132,614,000
                                                                    $54,410,000
 Notes: Detail may not add exactly to total due to independent rounding.

 Exhibit C.60: National Annualized Rule Costs - Public PWS at 3% Discount Rate (2016$)

                               Low Cost Estimate
                               High Cost Estimate
 PWS Annual Costs
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
 Sampling
                                                                    $31,367,000
                                                                    $52,891,000
                                                                    $21,523,000
                                                                    $33,737,000
                                                                    $62,863,000
                                                                    $29,126,000
 PWS Lead Service Line Replacement
                                                                       $547,000
                                                                    $38,509,000
                                                                    $37,962,000
                                                                    $23,184,000
                                                                   $121,628,000
                                                                    $98,444,000
 Corrosion Control Technology
                                                                   $297,461,000
                                                                   $315,441,000
                                                                    $17,980,000
                                                                   $326,424,000
                                                                   $407,713,000
                                                                    $81,289,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                     $1,543,000
                                                                     $1,543,000
                                                                             $0
                                                                     $8,655,000
                                                                     $8,655,000
 Public Education and Outreach
                                                                       $289,000
                                                                    $28,585,000
                                                                    $28,296,000
                                                                     $1,228,000
                                                                    $35,251,000
                                                                    $34,023,000
 Rule Implementation and Administration
                                                                             $0
                                                                     $1,686,000
                                                                     $1,686,000
                                                                             $0
                                                                     $1,686,000
                                                                     $1,686,000
 Total Annual PWS Costs
                                                                   $329,664,000
                                                                   $438,655,000
                                                                   $108,991,000
                                                                   $384,573,000
                                                                   $637,797,000
                                                                   $253,224,000
 State Rule Implementation and Administration
                                                                     $4,207,000
                                                                    $17,019,000
                                                                    $12,811,000
                                                                     $4,856,000
                                                                    $18,613,000
                                                                    $13,757,000
 Household Lead Service Line Replacement
                                                                       $158,000
                                                                     $6,974,000
                                                                     $6,816,000
                                                                     $4,646,000
                                                                    $17,192,000
                                                                    $12,546,000
 Wastewater Treatment Plant Costs
                                                                       $158,000
                                                                     $1,248,000
                                                                     $1,090,000
                                                                       $644,000
                                                                     $2,372,000
                                                                     $1,728,000
 Total Annual Rule Costs
                                                                   $334,187,000
                                                                   $463,895,000
                                                                   $129,708,000
                                                                   $394,718,000
                                                                   $675,974,000
                                                                   $281,255,000
 Notes: Detail may not add exactly to total due to independent rounding.

 Exhibit C.61: National Annualized Rule Costs - Private CWS of Size 100 and Fewer Treating Ground Water at 3% Discount Rate (2016$)

                               Low Cost Estimate
                               High Cost Estimate
 PWS Annual Costs
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
 Sampling
                                                                     $3,097,000
                                                                     $3,799,000
                                                                       $702,000
                                                                     $3,286,000
                                                                     $3,564,000
                                                                       $278,000
 PWS Lead Service Line Replacement
                                                                           $663
                                                                       $422,000
                                                                       $421,000
                                                                        $92,000
                                                                       $638,000
                                                                       $546,000
 Corrosion Control Technology
                                                                     $4,644,000
                                                                     $3,693,000
                                                                      $-951,000
                                                                     $8,539,000
                                                                     $3,957,000
                                                                    $-4,583,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                       $757,000
                                                                       $757,000
                                                                             $0
                                                                     $2,695,000
                                                                     $2,695,000
 Public Education and Outreach
                                                                         $9,800
                                                                     $2,456,000
                                                                     $2,446,000
                                                                        $32,000
                                                                     $2,455,000
                                                                     $2,422,000
 Rule Implementation and Administration
                                                                             $0
                                                                       $375,000
                                                                       $375,000
                                                                             $0
                                                                       $375,000
                                                                       $375,000
 Total Annual PWS Costs
                                                                     $7,752,000
                                                                    $11,502,000
                                                                     $3,750,000
                                                                    $11,950,000
                                                                    $13,684,000
                                                                     $1,734,000
 State Rule Implementation and Administration
                                                                       $866,000
                                                                     $3,677,000
                                                                     $2,811,000
                                                                       $994,000
                                                                     $3,753,000
                                                                     $2,759,000
 Household Lead Service Line Replacement
                                                                           $153
                                                                             $0
                                                                          $-153
                                                                        $18,000
                                                                             $0
                                                                       $-18,000
 Wastewater Treatment Plant Costs
                                                                            $18
                                                                            $27
                                                                             $9
                                                                           $132
                                                                            $97
                                                                           $-35
 Total Annual Rule Costs
                                                                     $8,619,000
                                                                    $15,179,000
                                                                     $6,560,000
                                                                    $12,963,000
                                                                    $17,437,000
                                                                     $4,474,000
 Notes: Detail may not add exactly to total due to independent rounding.

 Exhibit C.62: National Annualized Rule Costs - Private CWS of Size 101 to 500 Treating Ground Water at 3% Discount Rate (2016$)

                               Low Cost Estimate
                               High Cost Estimate
 PWS Annual Costs
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
 Sampling
                                                                     $3,174,000
                                                                     $4,096,000
                                                                       $921,000
                                                                     $3,406,000
                                                                     $3,989,000
                                                                       $583,000
 PWS Lead Service Line Replacement
                                                                         $4,108
                                                                       $515,000
                                                                       $511,000
                                                                       $406,000
                                                                       $931,000
                                                                       $525,000
 Corrosion Control Technology
                                                                     $6,886,000
                                                                     $6,538,000
                                                                      $-348,000
                                                                    $10,920,000
                                                                     $7,979,000
                                                                    $-2,941,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                     $1,020,000
                                                                     $1,020,000
                                                                             $0
                                                                     $6,739,000
                                                                     $6,739,000
 Public Education and Outreach
                                                                        $10,000
                                                                     $2,161,000
                                                                     $2,151,000
                                                                        $32,000
                                                                     $2,424,000
                                                                     $2,392,000
 Rule Implementation and Administration
                                                                             $0
                                                                       $326,000
                                                                       $326,000
                                                                             $0
                                                                       $326,000
                                                                       $326,000
 Total Annual PWS Costs
                                                                    $10,074,000
                                                                    $14,654,000
                                                                     $4,580,000
                                                                    $14,763,000
                                                                    $22,388,000
                                                                     $7,625,000
 State Rule Implementation and Administration
                                                                       $761,000
                                                                     $3,318,000
                                                                     $2,558,000
                                                                       $890,000
                                                                     $3,454,000
                                                                     $2,565,000
 Household Lead Service Line Replacement
                                                                         $1,184
                                                                             $0
                                                                        $-1,184
                                                                        $82,000
                                                                             $0
                                                                       $-82,000
 Wastewater Treatment Plant Costs
                                                                           $239
                                                                           $630
                                                                           $391
                                                                         $1,226
                                                                           $836
                                                                          $-390
 Total Annual Rule Costs
                                                                    $10,837,000
                                                                    $17,973,000
                                                                     $7,137,000
                                                                    $15,736,000
                                                                    $25,843,000
                                                                    $10,107,000
 Notes: Detail may not add exactly to total due to independent rounding.

 Exhibit C.63: National Annualized Rule Costs - Private CWS of Size 501 to 1,000 Treating Ground Water at 3% Discount Rate (2016$)

                               Low Cost Estimate
                               High Cost Estimate
 PWS Annual Costs
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
 Sampling
                                                                       $715,000
                                                                       $996,000
                                                                       $281,000
                                                                       $761,000
                                                                     $1,246,000
                                                                       $485,000
 PWS Lead Service Line Replacement
                                                                         $4,009
                                                                       $115,000
                                                                       $111,000
                                                                       $242,000
                                                                       $514,000
                                                                       $272,000
 Corrosion Control Technology
                                                                     $1,939,000
                                                                     $2,136,000
                                                                       $197,000
                                                                     $2,750,000
                                                                     $4,081,000
                                                                     $1,331,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                        $38,000
                                                                        $38,000
                                                                             $0
                                                                       $469,000
                                                                       $469,000
 Public Education and Outreach
                                                                         $2,262
                                                                       $355,000
                                                                       $353,000
                                                                         $6,034
                                                                       $658,000
                                                                       $652,000
 Rule Implementation and Administration
                                                                             $0
                                                                        $51,000
                                                                        $51,000
                                                                             $0
                                                                        $51,000
                                                                        $51,000
 Total Annual PWS Costs
                                                                     $2,660,000
                                                                     $3,691,000
                                                                     $1,031,000
                                                                     $3,759,000
                                                                     $7,017,000
                                                                     $3,258,000
 State Rule Implementation and Administration
                                                                       $202,000
                                                                       $783,000
                                                                       $581,000
                                                                       $220,000
                                                                       $841,000
                                                                       $621,000
 Household Lead Service Line Replacement
                                                                         $1,181
                                                                             $0
                                                                        $-1,181
                                                                        $49,000
                                                                             $0
                                                                       $-49,000
 Wastewater Treatment Plant Costs
                                                                           $146
                                                                           $333
                                                                           $188
                                                                           $435
                                                                         $1,225
                                                                           $790
 Total Annual Rule Costs
                                                                     $2,863,000
                                                                     $4,474,000
                                                                     $1,611,000
                                                                     $4,028,000
                                                                     $7,859,000
                                                                     $3,831,000
 Notes: Detail may not add exactly to total due to independent rounding.

 Exhibit C.64: National Annualized Rule Costs - Private CWS of Size 1,001 to 3,300 Treating Ground Water at 3% Discount Rate (2016$)

                               Low Cost Estimate
                               High Cost Estimate
 PWS Annual Costs
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
 Sampling
                                                                       $492,000
                                                                       $702,000
                                                                       $211,000
                                                                       $558,000
                                                                       $968,000
                                                                       $410,000
 PWS Lead Service Line Replacement
                                                                             $0
                                                                        $54,000
                                                                        $54,000
                                                                       $213,000
                                                                       $252,000
                                                                        $39,000
 Corrosion Control Technology
                                                                     $1,890,000
                                                                     $2,171,000
                                                                       $281,000
                                                                     $2,882,000
                                                                     $4,296,000
                                                                     $1,413,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                       $114,000
                                                                       $114,000
 Public Education and Outreach
                                                                         $1,378
                                                                       $292,000
                                                                       $291,000
                                                                         $7,008
                                                                       $431,000
                                                                       $424,000
 Rule Implementation and Administration
                                                                             $0
                                                                        $39,000
                                                                        $39,000
                                                                             $0
                                                                        $39,000
                                                                        $39,000
 Total Annual PWS Costs
                                                                     $2,383,000
                                                                     $3,258,000
                                                                       $875,000
                                                                     $3,660,000
                                                                     $6,099,000
                                                                     $2,439,000
 State Rule Implementation and Administration
                                                                       $178,000
                                                                       $672,000
                                                                       $493,000
                                                                       $195,000
                                                                       $720,000
                                                                       $526,000
 Household Lead Service Line Replacement
                                                                             $0
                                                                             $0
                                                                             $0
                                                                        $43,000
                                                                             $0
                                                                       $-43,000
 Wastewater Treatment Plant Costs
                                                                           $273
                                                                           $715
                                                                           $442
                                                                           $452
                                                                         $4,024
                                                                         $3,573
 Total Annual Rule Costs
                                                                     $2,562,000
                                                                     $3,930,000
                                                                     $1,369,000
                                                                     $3,898,000
                                                                     $6,824,000
                                                                     $2,926,000
 Notes: Detail may not add exactly to total due to independent rounding.

 Exhibit C.65: National Annualized Rule Costs - Private CWS of Size 3,301 to 10,000 Treating Ground Water at 3% Discount Rate (2016$)

                               Low Cost Estimate
                               High Cost Estimate
 PWS Annual Costs
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
 Sampling
                                                                       $406,000
                                                                       $604,000
                                                                       $198,000
                                                                       $445,000
                                                                       $805,000
                                                                       $360,000
 PWS Lead Service Line Replacement
                                                                         $5,459
                                                                        $64,000
                                                                        $58,000
                                                                       $180,000
                                                                       $199,000
                                                                        $19,000
 Corrosion Control Technology
                                                                     $2,258,000
                                                                     $2,500,000
                                                                       $242,000
                                                                     $2,622,000
                                                                     $3,701,000
                                                                     $1,079,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
 Public Education and Outreach
                                                                         $9,248
                                                                       $214,000
                                                                       $204,000
                                                                        $22,000
                                                                       $338,000
                                                                       $317,000
 Rule Implementation and Administration
                                                                             $0
                                                                        $10,000
                                                                        $10,000
                                                                             $0
                                                                        $10,000
                                                                        $10,000
 Total Annual PWS Costs
                                                                     $2,679,000
                                                                     $3,392,000
                                                                       $713,000
                                                                     $3,269,000
                                                                     $5,053,000
                                                                     $1,784,000
 State Rule Implementation and Administration
                                                                       $133,000
                                                                       $440,000
                                                                       $307,000
                                                                       $138,000
                                                                       $460,000
                                                                       $322,000
 Household Lead Service Line Replacement
                                                                         $1,607
                                                                             $0
                                                                        $-1,607
                                                                        $36,000
                                                                             $0
                                                                       $-36,000
 Wastewater Treatment Plant Costs
                                                                           $180
                                                                         $1,514
                                                                         $1,335
                                                                         $1,040
                                                                         $4,345
                                                                         $3,305
 Total Annual Rule Costs
                                                                     $2,813,000
                                                                     $3,833,000
                                                                     $1,020,000
                                                                     $3,445,000
                                                                     $5,517,000
                                                                     $2,073,000
 Notes: Detail may not add exactly to total due to independent rounding.

 Exhibit C.66: National Annualized Rule Costs - Private CWS of Size 10,001 to 50,000 Treating Ground Water at 3% Discount Rate (2016$)

                               Low Cost Estimate
                               High Cost Estimate
 PWS Annual Costs
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
 Sampling
                                                                       $320,000
                                                                       $572,000
                                                                       $252,000
                                                                       $369,000
                                                                       $710,000
                                                                       $341,000
 PWS Lead Service Line Replacement
                                                                         $8,010
                                                                       $613,000
                                                                       $605,000
                                                                       $154,000
                                                                     $1,141,000
                                                                       $987,000
 Corrosion Control Technology
                                                                     $2,553,000
                                                                     $2,823,000
                                                                       $270,000
                                                                     $3,076,000
                                                                     $3,813,000
                                                                       $738,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
 Public Education and Outreach
                                                                         $3,995
                                                                       $353,000
                                                                       $349,000
                                                                        $24,000
                                                                       $281,000
                                                                       $257,000
 Rule Implementation and Administration
                                                                             $0
                                                                         $5,754
                                                                         $5,754
                                                                             $0
                                                                         $5,754
                                                                         $5,754
 Total Annual PWS Costs
                                                                     $2,885,000
                                                                     $4,367,000
                                                                     $1,482,000
                                                                     $3,622,000
                                                                     $5,951,000
                                                                     $2,329,000
 State Rule Implementation and Administration
                                                                       $117,000
                                                                       $374,000
                                                                       $257,000
                                                                       $122,000
                                                                       $383,000
                                                                       $261,000
 Household Lead Service Line Replacement
                                                                         $2,326
                                                                       $147,000
                                                                       $145,000
                                                                        $31,000
                                                                       $134,000
                                                                       $104,000
 Wastewater Treatment Plant Costs
                                                                             $0
                                                                         $1,507
                                                                         $1,507
                                                                             $0
                                                                         $7,322
                                                                         $7,322
 Total Annual Rule Costs
                                                                     $3,004,000
                                                                     $4,890,000
                                                                     $1,886,000
                                                                     $3,775,000
                                                                     $6,476,000
                                                                     $2,701,000
 Notes: Detail may not add exactly to total due to independent rounding.

 Exhibit C.67: National Annualized Rule Costs - Private CWS of Size 50,001 to 100,000 Treating Ground Water at 3% Discount Rate (2016$)

                               Low Cost Estimate
                               High Cost Estimate
 PWS Annual Costs
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
 Sampling
                                                                       $265,000
                                                                       $338,000
                                                                        $73,000
                                                                       $268,000
                                                                       $346,000
                                                                        $77,000
 PWS Lead Service Line Replacement
                                                                         $3,712
                                                                       $127,000
                                                                       $123,000
                                                                        $68,000
                                                                       $372,000
                                                                       $304,000
 Corrosion Control Technology
                                                                     $1,833,000
                                                                     $1,889,000
                                                                        $55,000
                                                                     $1,922,000
                                                                     $2,092,000
                                                                       $170,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
 Public Education and Outreach
                                                                         $1,205
                                                                        $98,000
                                                                        $97,000
                                                                         $6,280
                                                                        $84,000
                                                                        $78,000
 Rule Implementation and Administration
                                                                             $0
                                                                           $654
                                                                           $654
                                                                             $0
                                                                           $654
                                                                           $654
 Total Annual PWS Costs
                                                                     $2,103,000
                                                                     $2,452,000
                                                                       $348,000
                                                                     $2,265,000
                                                                     $2,895,000
                                                                       $630,000
 State Rule Implementation and Administration
                                                                       $117,000
                                                                       $314,000
                                                                       $196,000
                                                                       $117,000
                                                                       $314,000
                                                                       $196,000
 Household Lead Service Line Replacement
                                                                         $1,076
                                                                        $39,000
                                                                        $38,000
                                                                        $14,000
                                                                        $65,000
                                                                        $52,000
 Wastewater Treatment Plant Costs
                                                                         $1,265
                                                                         $2,021
                                                                           $756
                                                                         $4,833
                                                                         $8,622
                                                                         $3,789
 Total Annual Rule Costs
                                                                     $2,223,000
                                                                     $2,806,000
                                                                       $583,000
                                                                     $2,401,000
                                                                     $3,282,000
                                                                       $882,000
 Notes: Detail may not add exactly to total due to independent rounding.

 Exhibit C.68: National Annualized Rule Costs - Private CWS of Size 100,001 to 1,000,000 Treating Ground Water at 3% 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
                                                                       $407,000
                                                                       $114,000
                                                                       $297,000
                                                                       $433,000
                                                                       $136,000
 PWS Lead Service Line Replacement
                                                                             $0
                                                                       $188,000
                                                                       $188,000
                                                                       $227,000
                                                                     $1,304,000
                                                                     $1,077,000
 Corrosion Control Technology
                                                                     $2,744,000
                                                                     $2,855,000
                                                                       $111,000
                                                                     $2,859,000
                                                                     $3,288,000
                                                                       $429,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
 Public Education and Outreach
                                                                         $1,582
                                                                       $142,000
                                                                       $140,000
                                                                        $11,000
                                                                       $249,000
                                                                       $238,000
 Rule Implementation and Administration
                                                                             $0
                                                                           $537
                                                                           $537
                                                                             $0
                                                                           $537
                                                                           $537
 Total Annual PWS Costs
                                                                     $3,038,000
                                                                     $3,592,000
                                                                       $553,000
                                                                     $3,395,000
                                                                     $5,275,000
                                                                     $1,880,000
 State Rule Implementation and Administration
                                                                       $114,000
                                                                       $309,000
                                                                       $195,000
                                                                       $115,000
                                                                       $310,000
                                                                       $196,000
 Household Lead Service Line Replacement
                                                                             $0
                                                                        $37,000
                                                                        $37,000
                                                                        $45,000
                                                                       $198,000
                                                                       $153,000
 Wastewater Treatment Plant Costs
                                                                             $0
                                                                         $4,850
                                                                         $4,850
                                                                         $8,581
                                                                        $19,000
                                                                        $10,000
 Total Annual Rule Costs
                                                                     $3,153,000
                                                                     $3,943,000
                                                                       $790,000
                                                                     $3,563,000
                                                                     $5,802,000
                                                                     $2,239,000
 Notes: Detail may not add exactly to total due to independent rounding.

 Exhibit C.69: National Annualized Rule Costs - Private CWS of Size 100 and Fewer Treating Surface Water at 3% Discount Rate (2016$)

                               Low Cost Estimate
                               High Cost Estimate
 PWS Annual Costs
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
 Sampling
                                                                       $127,000
                                                                       $179,000
                                                                        $52,000
                                                                       $136,000
                                                                       $148,000
                                                                        $12,000
 PWS Lead Service Line Replacement
                                                                           $204
                                                                        $52,000
                                                                        $52,000
                                                                        $21,000
                                                                       $110,000
                                                                        $89,000
 Corrosion Control Technology
                                                                       $642,000
                                                                       $666,000
                                                                        $24,000
                                                                       $768,000
                                                                       $697,000
                                                                       $-70,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                        $27,000
                                                                        $27,000
                                                                             $0
                                                                       $271,000
                                                                       $271,000
 Public Education and Outreach
                                                                           $257
                                                                       $135,000
                                                                       $135,000
                                                                         $1,484
                                                                       $146,000
                                                                       $144,000
 Rule Implementation and Administration
                                                                             $0
                                                                        $18,000
                                                                        $18,000
                                                                             $0
                                                                        $18,000
                                                                        $18,000
 Total Annual PWS Costs
                                                                       $769,000
                                                                     $1,078,000
                                                                       $308,000
                                                                       $926,000
                                                                     $1,390,000
                                                                       $464,000
 State Rule Implementation and Administration
                                                                       $136,000
                                                                       $500,000
                                                                       $365,000
                                                                       $143,000
                                                                       $510,000
                                                                       $366,000
 Household Lead Service Line Replacement
                                                                            $55
                                                                             $0
                                                                           $-55
                                                                         $4,211
                                                                             $0
                                                                        $-4,211
 Wastewater Treatment Plant Costs
                                                                             $3
                                                                            $20
                                                                            $18
                                                                            $15
                                                                            $34
                                                                            $19
 Total Annual Rule Costs
                                                                       $905,000
                                                                     $1,578,000
                                                                       $673,000
                                                                     $1,074,000
                                                                     $1,900,000
                                                                       $826,000
 Notes: Detail may not add exactly to total due to independent rounding.

 Exhibit C.70: National Annualized Rule Costs - Private CWS of Size 101 to 500 Treating Surface Water at 3% Discount Rate (2016$)

                               Low Cost Estimate
                               High Cost Estimate
 PWS Annual Costs
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
 Sampling
                                                                       $288,000
                                                                       $464,000
                                                                       $176,000
                                                                       $310,000
                                                                       $393,000
                                                                        $82,000
 PWS Lead Service Line Replacement
                                                                         $1,395
                                                                       $158,000
                                                                       $157,000
                                                                       $167,000
                                                                       $282,000
                                                                       $114,000
 Corrosion Control Technology
                                                                     $1,351,000
                                                                     $1,466,000
                                                                       $116,000
                                                                     $1,545,000
                                                                     $1,772,000
                                                                       $226,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                        $32,000
                                                                        $32,000
                                                                             $0
                                                                     $1,252,000
                                                                     $1,252,000
 Public Education and Outreach
                                                                           $632
                                                                       $243,000
                                                                       $242,000
                                                                         $2,744
                                                                       $334,000
                                                                       $331,000
 Rule Implementation and Administration
                                                                             $0
                                                                        $30,000
                                                                        $30,000
                                                                             $0
                                                                        $30,000
                                                                        $30,000
 Total Annual PWS Costs
                                                                     $1,641,000
                                                                     $2,394,000
                                                                       $753,000
                                                                     $2,025,000
                                                                     $4,061,000
                                                                     $2,036,000
 State Rule Implementation and Administration
                                                                       $164,000
                                                                       $668,000
                                                                       $504,000
                                                                       $178,000
                                                                       $683,000
                                                                       $505,000
 Household Lead Service Line Replacement
                                                                           $403
                                                                             $0
                                                                          $-403
                                                                        $34,000
                                                                             $0
                                                                       $-34,000
 Wastewater Treatment Plant Costs
                                                                            $11
                                                                           $118
                                                                           $107
                                                                           $150
                                                                           $352
                                                                           $202
 Total Annual Rule Costs
                                                                     $1,805,000
                                                                     $3,061,000
                                                                     $1,257,000
                                                                     $2,237,000
                                                                     $4,745,000
                                                                     $2,507,000
 Notes: Detail may not add exactly to total due to independent rounding.

 Exhibit C.71: National Annualized Rule Costs - Private CWS of Size 501 to 1,000 Treating Surface Water at 3% Discount Rate (2016$)

                               Low Cost Estimate
                               High Cost Estimate
 PWS Annual Costs
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
 Sampling
                                                                       $135,000
                                                                       $221,000
                                                                        $87,000
                                                                       $145,000
                                                                       $277,000
                                                                       $132,000
 PWS Lead Service Line Replacement
                                                                         $1,120
                                                                        $62,000
                                                                        $61,000
                                                                       $128,000
                                                                       $172,000
                                                                        $44,000
 Corrosion Control Technology
                                                                       $461,000
                                                                       $527,000
                                                                        $65,000
                                                                       $535,000
                                                                     $1,140,000
                                                                       $605,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                        $43,000
                                                                        $43,000
 Public Education and Outreach
                                                                           $296
                                                                        $75,000
                                                                        $75,000
                                                                         $1,087
                                                                       $175,000
                                                                       $174,000
 Rule Implementation and Administration
                                                                             $0
                                                                         $8,627
                                                                         $8,627
                                                                             $0
                                                                         $8,627
                                                                         $8,627
 Total Annual PWS Costs
                                                                       $597,000
                                                                       $894,000
                                                                       $297,000
                                                                       $809,000
                                                                     $1,816,000
                                                                     $1,007,000
 State Rule Implementation and Administration
                                                                       $121,000
                                                                       $399,000
                                                                       $278,000
                                                                       $125,000
                                                                       $412,000
                                                                       $287,000
 Household Lead Service Line Replacement
                                                                           $329
                                                                             $0
                                                                          $-329
                                                                        $26,000
                                                                             $0
                                                                       $-26,000
 Wastewater Treatment Plant Costs
                                                                             $4
                                                                           $212
                                                                           $209
                                                                             $0
                                                                           $321
                                                                           $321
 Total Annual Rule Costs
                                                                       $718,000
                                                                     $1,293,000
                                                                       $575,000
                                                                       $960,000
                                                                     $2,228,000
                                                                     $1,268,000
 Notes: Detail may not add exactly to total due to independent rounding.

 Exhibit C.72: National Annualized Rule Costs - Private CWS of Size 1,001 to 3,300 Treating Surface Water at 3% Discount Rate (2016$)

                               Low Cost Estimate
                               High Cost Estimate
 PWS Annual Costs
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
 Sampling
                                                                       $149,000
                                                                       $237,000
                                                                        $88,000
                                                                       $167,000
                                                                       $350,000
                                                                       $183,000
 PWS Lead Service Line Replacement
                                                                         $1,491
                                                                        $53,000
                                                                        $52,000
                                                                       $201,000
                                                                       $193,000
                                                                        $-8,325
 Corrosion Control Technology
                                                                       $973,000
                                                                     $1,107,000
                                                                       $135,000
                                                                     $1,101,000
                                                                     $2,207,000
                                                                     $1,106,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
 Public Education and Outreach
                                                                           $850
                                                                       $122,000
                                                                       $121,000
                                                                         $2,888
                                                                       $220,000
                                                                       $217,000
 Rule Implementation and Administration
                                                                             $0
                                                                        $11,000
                                                                        $11,000
                                                                             $0
                                                                        $11,000
                                                                        $11,000
 Total Annual PWS Costs
                                                                     $1,124,000
                                                                     $1,531,000
                                                                       $407,000
                                                                     $1,472,000
                                                                     $2,981,000
                                                                     $1,509,000
 State Rule Implementation and Administration
                                                                       $128,000
                                                                       $437,000
                                                                       $309,000
                                                                       $134,000
                                                                       $463,000
                                                                       $328,000
 Household Lead Service Line Replacement
                                                                           $439
                                                                             $0
                                                                          $-439
                                                                        $41,000
                                                                             $0
                                                                       $-41,000
 Wastewater Treatment Plant Costs
                                                                           $312
                                                                           $657
                                                                           $345
                                                                           $534
                                                                         $4,937
                                                                         $4,403
 Total Annual Rule Costs
                                                                     $1,253,000
                                                                     $1,969,000
                                                                       $716,000
                                                                     $1,648,000
                                                                     $3,448,000
                                                                     $1,801,000
 Notes: Detail may not add exactly to total due to independent rounding.

 Exhibit C.73: National Annualized Rule Costs - Private CWS of Size 3,301 to 10,000 Treating Surface Water at 3% Discount Rate (2016$)

                               Low Cost Estimate
                               High Cost Estimate
 PWS Annual Costs
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
 Sampling
                                                                       $210,000
                                                                       $324,000
                                                                       $114,000
                                                                       $232,000
                                                                       $474,000
                                                                       $242,000
 PWS Lead Service Line Replacement
                                                                         $2,087
                                                                        $66,000
                                                                        $64,000
                                                                       $255,000
                                                                       $215,000
                                                                       $-40,000
 Corrosion Control Technology
                                                                     $1,412,000
                                                                     $1,571,000
                                                                       $159,000
                                                                     $1,549,000
                                                                     $2,511,000
                                                                       $962,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
 Public Education and Outreach
                                                                         $2,972
                                                                       $146,000
                                                                       $143,000
                                                                        $13,000
                                                                       $282,000
                                                                       $269,000
 Rule Implementation and Administration
                                                                             $0
                                                                         $5,118
                                                                         $5,118
                                                                             $0
                                                                         $5,118
                                                                         $5,118
 Total Annual PWS Costs
                                                                     $1,627,000
                                                                     $2,112,000
                                                                       $485,000
                                                                     $2,049,000
                                                                     $3,487,000
                                                                     $1,438,000
 State Rule Implementation and Administration
                                                                       $120,000
                                                                       $385,000
                                                                       $265,000
                                                                       $124,000
                                                                       $403,000
                                                                       $280,000
 Household Lead Service Line Replacement
                                                                           $614
                                                                             $0
                                                                          $-614
                                                                        $51,000
                                                                             $0
                                                                       $-51,000
 Wastewater Treatment Plant Costs
                                                                             $0
                                                                         $1,971
                                                                         $1,971
                                                                           $661
                                                                         $2,834
                                                                         $2,173
 Total Annual Rule Costs
                                                                     $1,747,000
                                                                     $2,499,000
                                                                       $752,000
                                                                     $2,225,000
                                                                     $3,893,000
                                                                     $1,668,000
 Notes: Detail may not add exactly to total due to independent rounding.

 Exhibit C.74: National Annualized Rule Costs - Private CWS of Size 10,001 to 50,000 Treating Surface Water at 3% Discount Rate (2016$)

                               Low Cost Estimate
                               High Cost Estimate
 PWS Annual Costs
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
 Sampling
                                                                       $315,000
                                                                       $624,000
                                                                       $309,000
                                                                       $355,000
                                                                       $779,000
                                                                       $425,000
 PWS Lead Service Line Replacement
                                                                        $16,000
                                                                     $1,545,000
                                                                     $1,529,000
                                                                       $510,000
                                                                     $3,318,000
                                                                     $2,808,000
 Corrosion Control Technology
                                                                     $3,660,000
                                                                     $4,023,000
                                                                       $363,000
                                                                     $3,974,000
                                                                     $5,368,000
                                                                     $1,394,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
 Public Education and Outreach
                                                                         $2,147
                                                                       $761,000
                                                                       $759,000
                                                                        $23,000
                                                                       $538,000
                                                                       $515,000
 Rule Implementation and Administration
                                                                             $0
                                                                         $5,788
                                                                         $5,788
                                                                             $0
                                                                         $5,788
                                                                         $5,788
 Total Annual PWS Costs
                                                                     $3,994,000
                                                                     $6,959,000
                                                                     $2,965,000
                                                                     $4,862,000
                                                                    $10,010,000
                                                                     $5,148,000
 State Rule Implementation and Administration
                                                                       $121,000
                                                                       $412,000
                                                                       $291,000
                                                                       $126,000
                                                                       $425,000
                                                                       $299,000
 Household Lead Service Line Replacement
                                                                         $4,701
                                                                       $398,000
                                                                       $393,000
                                                                       $102,000
                                                                       $543,000
                                                                       $440,000
 Wastewater Treatment Plant Costs
                                                                             $0
                                                                        $17,000
                                                                        $17,000
                                                                         $6,106
                                                                        $28,000
                                                                        $22,000
 Total Annual Rule Costs
                                                                     $4,119,000
                                                                     $7,785,000
                                                                     $3,666,000
                                                                     $5,096,000
                                                                    $11,005,000
                                                                     $5,909,000
 Notes: Detail may not add exactly to total due to independent rounding.

 Exhibit C.75: National Annualized Rule Costs - Private CWS of Size 50,001 to 100,000 Treating Surface Water at 3% Discount Rate (2016$)

                               Low Cost Estimate
                               High Cost Estimate
 PWS Annual Costs
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
 Sampling
                                                                       $195,000
                                                                       $324,000
                                                                       $129,000
                                                                       $201,000
                                                                       $338,000
                                                                       $137,000
 PWS Lead Service Line Replacement
                                                                        $16,000
                                                                       $414,000
                                                                       $398,000
                                                                        $91,000
                                                                       $843,000
                                                                       $752,000
 Corrosion Control Technology
                                                                     $2,732,000
                                                                     $2,900,000
                                                                       $168,000
                                                                     $2,810,000
                                                                     $3,243,000
                                                                       $433,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
 Public Education and Outreach
                                                                         $2,269
                                                                       $208,000
                                                                       $206,000
                                                                        $11,000
                                                                       $175,000
                                                                       $164,000
 Rule Implementation and Administration
                                                                             $0
                                                                         $1,380
                                                                         $1,380
                                                                             $0
                                                                         $1,380
                                                                         $1,380
 Total Annual PWS Costs
                                                                     $2,946,000
                                                                     $3,847,000
                                                                       $902,000
                                                                     $3,114,000
                                                                     $4,602,000
                                                                     $1,488,000
 State Rule Implementation and Administration
                                                                       $140,000
                                                                       $352,000
                                                                       $212,000
                                                                       $140,000
                                                                       $352,000
                                                                       $212,000
 Household Lead Service Line Replacement
                                                                         $4,617
                                                                        $96,000
                                                                        $92,000
                                                                        $18,000
                                                                       $148,000
                                                                       $130,000
 Wastewater Treatment Plant Costs
                                                                           $480
                                                                         $7,203
                                                                         $6,723
                                                                         $2,427
                                                                         $5,424
                                                                         $2,997
 Total Annual Rule Costs
                                                                     $3,091,000
                                                                     $4,303,000
                                                                     $1,212,000
                                                                     $3,275,000
                                                                     $5,108,000
                                                                     $1,833,000
 Notes: Detail may not add exactly to total due to independent rounding.

 Exhibit C.76: National Annualized Rule Costs - Private CWS of Size 100,001 to 1,000,000 Treating Surface Water at 3% Discount Rate (2016$)

                               Low Cost Estimate
                               High Cost Estimate
 PWS Annual Costs
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
                                                                   Previous LCR
                                                                     Final LCRR
                                                                    Incremental
 Sampling
                                                                       $407,000
                                                                       $883,000
                                                                       $476,000
                                                                       $420,000
                                                                       $975,000
                                                                       $555,000
 PWS Lead Service Line Replacement
                                                                        $17,000
                                                                     $1,376,000
                                                                     $1,359,000
                                                                     $1,136,000
                                                                     $8,055,000
                                                                     $6,918,000
 Corrosion Control Technology
                                                                    $10,860,000
                                                                    $11,400,000
                                                                       $540,000
                                                                    $11,220,000
                                                                    $13,042,000
                                                                     $1,822,000
 Point-of Use Installation and Maintenance
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
                                                                             $0
 Public Education and Outreach
                                                                         $7,370
                                                                       $817,000
                                                                       $810,000
                                                                        $42,000
                                                                     $1,375,000
                                                                     $1,333,000
 Rule Implementation and Administration
                                                                             $0
                                                                         $1,900
                                                                         $1,900
                                                                             $0
                                                                         $1,900
                                                                         $1,900
 Total Annual PWS Costs
                                                                    $11,291,000
                                                                    $14,478,000
                                                                     $3,188,000
                                                                    $12,819,000
                                                                    $23,449,000
                                                                    $10,630,000
 State Rule Implementation and Administration
                                                                       $148,000
                                                                       $371,000
                                                                       $223,000
                                                                       $149,000
                                                                       $375,000
                                                                       $226,000
 Household Lead Service Line Replacement
                                                                         $4,791
                                                                       $404,000
                                                                       $399,000
                                                                       $226,000
                                                                     $1,258,000
                                                                     $1,031,000
 Wastewater Treatment Plant Costs
                                                                             $0
                                                                        $27,000
                                                                        $27,000
                                                                        $24,000
                                                                        $64,000