Honolulu County, Hawaii — public water systems
39 active public water systems serve Honolulu County, reporting 1.1M people served.
Dataset updated . Source: EPA SDWIS/ECHO, refreshed quarterly.
Active systems
39
Population served
1.1M
Community systems
30
Groundwater share
94.9%
Water systems in Honolulu County
| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Hnl-Windward-Pearl Harbor | Honolulu | 631,389 | Community | Groundwater |
| 2 | Waipahu-Ewa-Waianae | Honolulu | 217,479 | Community | Groundwater |
| 3 | Joint Base Pearl Harbor-Hickam | Honolulu | 65,230 | Community | Groundwater |
| 4 | Mililani | Honolulu | 50,573 | Community | Groundwater |
| 5 | Schofield Barracks | Honolulu | 37,920 | Community | Groundwater |
| 6 | Wahiawa | Honolulu | 23,348 | Community | Groundwater |
| 7 | Marine Corps Base Hawaii | Honolulu | 16,300 | Community | Purchased groundwater |
| 8 | Waipio Heights | Honolulu | 11,516 | Community | Groundwater |
| 9 | Waialua-Haleiwa | Honolulu | 9,996 | Community | Groundwater |
| 10 | Fort Shafter | Honolulu | 7,067 | Community | Groundwater |
| 11 | Nctams Eastpac | Honolulu | 6,470 | Community | Groundwater |
| 12 | Aliamanu | Honolulu | 6,406 | Community | Purchased groundwater |
| 13 | Laie Water Company | Honolulu | 5,577 | Community | Groundwater |
| 14 | Tripler Army Medical Cntr | Honolulu | 5,555 | Community | Groundwater |
| 15 | Barbers Point | Honolulu | 5,256 | Community | Groundwater |
| 16 | Waialee-Sunset Beach | Honolulu | 4,916 | Community | Groundwater |
| 17 | Kamehameha Schools | Honolulu | 4,000 | Community | Groundwater |
| 18 | Punahou School | Honolulu | 4,000 | Non-transient non-community | Groundwater |
| 19 | The Queen'S Medical Center | Honolulu | 3,440 | Community | Groundwater |
| 20 | Sheraton Hotels | Honolulu | 2,830 | Non-transient non-community | Groundwater |
| 21 | Kahuku | Honolulu | 2,730 | Community | Groundwater |
| 22 | Dillingham Airfield | Honolulu | 1,800 | Community | Groundwater |
| 23 | The Queen'S Medical Center West Oahu | Honolulu | 800 | Non-transient non-community | Purchased groundwater |
| 24 | Kunia Village | Honolulu | 650 | Community | Groundwater |
| 25 | Camp Stover | Honolulu | 595 | Community | Purchased groundwater |
| 26 | Waimano Ridge | Honolulu | 545 | Non-transient non-community | Groundwater |
| 27 | Waiawa Correctional Facility | Honolulu | 444 | Community | Surface water |
| 28 | Hawaii Country Club | Honolulu | 400 | Non-transient non-community | Groundwater |
| 29 | Waialua Sugar Pump 2 | Honolulu | 400 | Community | Groundwater |
| 30 | Waiahole | Honolulu | 300 | Community | Groundwater |
| 31 | Navmag Lualualei | Honolulu | 114 | Non-transient non-community | Groundwater |
| 32 | Dillingham Ranch | Honolulu | 100 | Community | Groundwater |
| 33 | Mililani Memorial Park | Honolulu | 100 | Non-transient non-community | Surface water |
| 34 | Kahuku Air Base | Honolulu | 75 | Community | Groundwater |
| 35 | Palehua Solar Observatory | Honolulu | 50 | Non-transient non-community | Purchased groundwater |
| 36 | Woodlands at Nuuanu | Honolulu | 48 | Community | Purchased groundwater |
| 37 | St Stephen'S Diocesan Ctr | Honolulu | 45 | Non-transient non-community | Groundwater |
| 38 | Villa Rose | Honolulu | 30 | Community | Groundwater |
| 39 | Poamoho | Honolulu | 25 | Community | Groundwater |