DOW - Water Quality Information

Your water comes from ground water (underground) and surface water sources. Ground water comes from 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. Tunnels are constructed to tap these sources. The quality of groundwater is very good and requires no treatment except for disinfection. The surface water source is the Kapaia Reservoir. The water is pumped into a filter plant to remove all the suspended material from the water. The water is then disinfected and fed into the distribution system.

The water supply for the Lihue-Kapaa Water System comes from the following sources:

Puhi Area:

Puhi Wells No. 1, 3, and 4
Puhi Wells No. 5A and 5B

Lihue-Hanamaulu Area:

Kalepa Ridge Well Garlinghouse Tunnel

Kilohana Well A Kilohana Well I

Kilohana Well B Lihue Grammer School Well

Hanamaulu Well No. 3 & 4 Pukaki Well

Grove Farm Surface Water Treatment Plant

Wailua-Kapaa Area:

Makaleha Tunnel

Moalepe Tunnel

Kapaa Homesteads Wells No. 1 and 2

Wailua Homesteads Well A and Well B

Nonou Well B and Well C

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

Puhi Area:

Puhi 510
1,000,000 gallon tank

KCC

500,000 gallon tank

Lihue-Hanamaulu Area:

Lihue

1,000,000 gallon tanks @ 2 each

Kalepa

500,000 and 1,000,000 gallon tanks

Nawiliwili

1,000,000 gallon tank

Hanamaulu 510 Tank

100,000 gallon tank

Kauai Inn

250,000 gallon tank

KCC 393

1,000,000 gallon tank

Wailua-Kapaa Area:

Nonou

2,000,000 gallon tank

Makaleha

1,000,000 gallon tank

Ornellas

200,000 gallon tank

Wailua Homesteads

500,000 gallon tank

Puupilo

125,000 gallon tank

Kapaa Homesteads Tank

500,000 gallon tank

Stable Tank

1,000,000 gallon tank