Public Water Systems
137 active public water systems in HI, tracked from EPA's Safe Drinking Water Information System (SDWIS) across all 50 states. See our methodology.
| System Name | Location | Population | Violations | PFAS |
|---|---|---|---|---|
| Kipahulu | Makawao, HI | 2,000 | 3 | - |
| Kokee State Park | Honolulu, HI | 2,000 | 83 | - |
| Kaupulehu | Kailua-Kona, HI | 1,945 | 42 | - |
| Lalamilo | Hilo, HI | 1,895 | 3 | - |
| Pahoa | Hilo, HI | 1,885 | 11 | - |
| Dillingham Airfield | Honolulu, HI | 1,800 | 20 | - |
| Pepeekeo | Hilo, HI | 1,450 | 2 | - |
| Hawaiian Shores | Pahoa, HI | 1,360 | 1 | - |
| Hana | Wailuku, HI | 1,284 | 139 | - |
| Gay & Robinson | Kaumakani, HI | 1,271 | 58 | - |
| Pahala | Hilo, HI | 1,226 | 90 | - |
| Haleakala National Park | Makawao, HI | 1,200 | 14 | - |
| Pacific Missile Range Facility | Jbpph, HI | 1,200 | 15 | - |
| Laupahoehoe-Kapehu | Hilo, HI | 1,169 | 8 | - |
| Ualapue | Wailuku, HI | 1,119 | 60 | - |
| Hawaiian Ocean View Estates | Hilo, HI | 1,000 | 6 | - |
| Maunaloa-Kaluakoi | Maunaloa, HI | 1,000 | 140 | - |
| Hoku'ula Water System | HI | 1,000 | 0 | - |
| Kohala Ranch Water Co. | Kamuela, HI | 850 | 11 | Clean |
| Haena-Wainiha | Lihue, HI | 833 | 4 | - |
| Hana Water Systems - South | Hana, HI | 816 | 31 | - |
| The Queen's Medical Center West Oahu | Ewa Beach, HI | 800 | 0 | - |
| Paauilo | Hilo, HI | 716 | 0 | - |
| Kunia Village | Kunia, HI | 650 | 86 | - |
| Honomu | Hilo, HI | 645 | 0 | - |
| Mahanalua Nui Subdivison | Kahului, HI | 606 | 0 | - |
| Camp Stover | Jbpph, HI | 595 | 0 | - |
| Kawela Plantation | Kaunakakai, HI | 553 | 1 | - |
| Waimano Ridge | Honolulu, HI | 545 | 27 | - |
| Kualapuu | Maunaloa, HI | 500 | 100 | - |
| Hanalei | Lihue, HI | 500 | 1 | - |
| Kukuihaele | Hilo, HI | 483 | 33 | - |
| Napuu Water Inc. | Kailua Kona, HI | 468 | 0 | - |
| Waiawa Correctional Facility | Pearl City, HI | 444 | 281 | - |
| Hakalau-Wailea | Hilo, HI | 402 | 4 | - |
| Hawaii Country Club | Wahiawa, HI | 400 | 15 | - |
| Waialua Sugar Pump 2 | Wahiawa, HI | 400 | 27 | - |
| Anahola Farm Lots | Lihue, HI | 385 | 2 | - |
| Kalae | Wailuku, HI | 360 | 16 | - |
| Waiahole | Honolulu, HI | 300 | 12 | - |
| Polihale State Park | Lihue, HI | 300 | 39 | - |
| Kalapana | Hilo, HI | 275 | 11 | - |
| Keanae | Wailuku, HI | 270 | 43 | Clean |
| Ookala (Dws) | Hilo, HI | 264 | 15 | - |
| Kona Water Service Company | Waikoloa, HI | 260 | 0 | - |
| Kealia | Kalaheo, HI | 260 | 25 | - |
| Niulii | Hilo, HI | 254 | 13 | - |
| Keopu Water Association | Holualoa, HI | 250 | 2 | - |
| Kilauea Military Camp | Hilo, HI | 220 | 9 | - |
| Punalu'u | Honolulu, HI | 200 | 15 | - |