What is PFAS?
Water suppliers
PFAS value per supplier, 2023–2025. EPA limit — 4 ppt (0.004 µg/L) for PFOA and PFOS, set in 2024. Suppliers that detected PFOA or PFOS
are highlighted and listed first. “Not detected” means the contaminant was measured but
not found.
| Supplier | City | Population | PFAS (ug/L) |
|---|---|---|---|
| Hnl-Windward-Pearl Harbor | Honolulu-Windward-Pearlharbor | 631,389 | Not detected |
| Waipahu-Ewa-Waianae | Waipahu-Ewa-Waianae | 217,479 | Not detected |
| Wailuku | Wailuku | 74,511 | Not detected |
| Joint Base Pearl Harbor-Hickam | Pearl Harbor | 65,230 | Not detected |
| Mililani | Mililani Bws | 50,573 | Not detected |
| Hilo | Hilo | 39,477 | Not detected |
| Schofield Barracks | Schofield Barracks | 37,920 | Not detected |
| Lihue-Kapaa | Lihue-Kapaa | 34,854 | Not detected |
| Makawao | Makawao | 29,868 | Not detected |
| North Kona | North Kona | 29,581 | Not detected |
| Wahiawa | Honolulu | 23,348 | Not detected |
| Lahaina | Lahaina | 20,065 | Not detected |
| Marine Corps Base Hawaii | Kaneohe | 16,300 | Not detected |
| Kalaheo-Koloa | Kalaheo | 12,660 | Not detected |
| Waikoloa | Waikoloa (Dho) | 12,100 | Not detected |
| Waipio Heights | Waipio | 11,516 | Not detected |
| Waialua-Haleiwa | Waialua-Haleiwa | 9,996 | Not detected |
| South Kohala | South Kohala | 9,612 | Not detected |
| Kaanapali | Kaanapali (Dho) | 8,000 | Not detected |
| Upper Kula | Kula | 7,686 | Not detected |
| Fort Shafter | Schofield Barracks | 7,067 | Not detected |
| Princeville | Princeville (Dho) | 6,911 | Not detected |
| South Kona | South Kona | 6,512 | Not detected |
| Nctams Eastpac | Wahiawa | 6,470 | Not detected |
| Olaa-Mountain View | Olaa-Mt.View | 6,467 | Not detected |
| Aliamanu | Salt Lake | 6,406 | Not detected |
| Kekaha-Waimea | Kekaha (Dow) | 5,998 | Not detected |
| Hanapepe-Eleele | Hanapepe-Eleele (Dow) | 5,592 | Not detected |
| Laie Water Company | Laie | 5,577 | Not detected |
| Tripler Army Medical Cntr | Moanalua | 5,555 | Not detected |
| Barbers Point | Waipahu-Ewa-Waianae | 5,256 | Not detected |
| North Kohala | North Kohala | 4,933 | Not detected |
| Waialee-Sunset Beach | Sunset Beach | 4,916 | Not detected |
| Haina | Haina | 4,563 | Not detected |
| Hawaii Volcanoes Nat.Park | Hvnp (Dho) | 4,201 | Not detected |
| Kapalua | Kapalua (Dho) | 4,200 | Not detected |
| Kamehameha Schools | Kapalama | 4,000 | Not detected |
| Kaunakakai | Kaunakakai | 3,702 | Not detected |
| Hawaiian Beaches | Hawaiian Shores Dho | 3,546 | Not detected |
| Lower Kula | Kula | 3,522 | Not detected |
| The Queen'S Medical Center | Downtown Honolulu | 3,440 | Not detected |
| Kilauea | Kilauea (Dow) | 3,420 | Not detected |
| Kohala Ranch Water Co. | Kohala Joint Venture | 850 | Not detected |
| Keanae | Keanae (Dws) | 270 | Not detected |