






Water Quality

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Frequently Asked Questions



Water Sources (WS)

Anahola WS

Anini WS

Haena-Wainiha WS

Hanalei WS

Hanapepe-Eleele WS

Kalaheo WS

Kilauea WS

Koloa-Poipu WS

Lawai-Omao WS

Lihue-Hanamaulu WS

Puhi WS

Wailua-Kapaa WS

Kekaha-Waimea WS






Where does my water come from?


Your water comes from ground water (underground) sources.  Rain that falls in the mountain filters through the ground into formations called aquifers. Wells are drilled into these formations and the water is pumped out. These formations can also be found in the mountains (still considered ground water). Tunnels are constructed to tap these sources. 


The quality of groundwater is very good and requires no treatment except for disinfection (as opposed to surface water sources that require filtration and stronger disinfection).



The water supply for the Haena & Wainiha water system comes from the following sources:


            Haena Well A

            Wainiha Well No. 1

            Wainiha Well No. 2



All of the water is chlorinated and pumped into the distribution system or stored in the following tanks:



            100,000 gallon tank



            6,500 gallon tank


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