Honolulu County, Hawaii
35 active water systems in this county.
| Water System | Population Served | Source | Violations | Health-Based |
|---|---|---|---|---|
| Mililani Memorial Park | 100 | Surface Water | 16 | 8 |
| Waiawa Correctional Facility | 444 | Surface Water | 10 | 5 |
| Waiahole | 300 | Groundwater | 2 | 1 |
| Villa Rose | 30 | Groundwater | 1 | 1 |
| Punahou School | 4,000 | Groundwater | 6 | 0 |
| The Queen's Medical Center | 3,440 | Groundwater | 6 | 0 |
| Marine Corps Base Hawaii | 16,300 | Groundwater Purchased | 5 | 0 |
| Kunia Village | 650 | Groundwater | 4 | 0 |
| Joint Base Pearl Harbor-hickam | 65,230 | Groundwater | 3 | 0 |
| Poamoho | 25 | Groundwater | 3 | 0 |
| Aliamanu | 6,406 | Groundwater Purchased | 1 | 0 |
| Tripler Army Medical Cntr | 5,555 | Groundwater | 1 | 0 |
| Kahuku | 2,730 | Groundwater | 1 | 0 |
| Waialua Sugar Pump 2 | 400 | Groundwater | 1 | 0 |
| Dillingham Ranch | 100 | Groundwater | 1 | 0 |
| Palehua Solar Observatory | 50 | Groundwater Purchased | 1 | 0 |
| Hnl-windward-pearl Harbor | 631,389 | Groundwater | 0 | 0 |
| Waipahu-ewa-waianae | 217,479 | Groundwater | 0 | 0 |
| Mililani | 50,573 | Groundwater | 0 | 0 |
| Waipio Heights | 11,516 | Groundwater | 0 | 0 |
| Waialua-haleiwa | 9,996 | Groundwater | 0 | 0 |
| Nctams Eastpac | 6,470 | Groundwater | 0 | 0 |
| Laie Water Company | 5,577 | Groundwater | 0 | 0 |
| Barbers Point | 5,256 | Groundwater | 0 | 0 |
| Waialee-sunset Beach | 4,916 | Groundwater | 0 | 0 |
| Kamehameha Schools | 4,000 | Groundwater | 0 | 0 |
| Dillingham Airfield | 1,800 | Groundwater | 0 | 0 |
| The Queen's Medical Center West Oahu | 800 | Groundwater Purchased | 0 | 0 |
| Camp Stover | 595 | Groundwater Purchased | 0 | 0 |
| Waimano Ridge | 545 | Groundwater | 0 | 0 |
| Hawaii Country Club | 400 | Groundwater | 0 | 0 |
| Navmag Lualualei | 114 | Groundwater | 0 | 0 |
| Kahuku Air Base | 75 | Groundwater | 0 | 0 |
| Woodlands at Nuuanu | 48 | Groundwater Purchased | 0 | 0 |
| St Stephen's Diocesan Ctr | 45 | Groundwater | 0 | 0 |