PFAS in Hawaii tap water

0 of 45 tested systems measured above the federal limit. 2 had a detection of any kind.

Every public water system below was required by the EPA to test for 29 PFAS compounds. Sorted by the highest PFOA or PFOS reading, worst first. Find yours for the full set of readings and what removes them.

Water system	Highest PFOA	Highest PFOS	Found	Against the 4 ppt limit
Aliamanu	none detected	none detected	0 of 29	Within
Barbers Point	none detected	none detected	0 of 29	Within
Fort Shafter	none detected	none detected	0 of 29	Within
Haina	none detected	none detected	0 of 29	Within
Hanapepe-eleele	none detected	none detected	0 of 29	Within
Hawaii Volcanoes Nat.park	none detected	none detected	0 of 29	Within
Hawaiian Beaches	none detected	none detected	0 of 29	Within
Hilo	none detected	none detected	0 of 29	Within
Hnl-windward-pearl Harbor	none detected	none detected	1 of 29	Within
Joint Base Pearl Harbor-hickam	none detected	none detected	0 of 29	Within
Kaanapali	none detected	none detected	0 of 29	Within
Kalaheo-koloa	none detected	none detected	0 of 29	Within
Kamehameha Schools	none detected	none detected	0 of 29	Within
Kapalua	none detected	none detected	0 of 29	Within
Kaunakakai	none detected	none detected	0 of 29	Within
Keanae	none detected	none detected	0 of 29	Within
Kekaha-waimea	none detected	none detected	0 of 29	Within
Kilauea	none detected	none detected	0 of 29	Within
Kohala Ranch Water Co.	none detected	none detected	0 of 29	Within
Lahaina	none detected	none detected	0 of 29	Within
Laie Water Company	none detected	none detected	0 of 29	Within
Lihue-kapaa	none detected	none detected	0 of 29	Within
Lower Kula	none detected	none detected	0 of 29	Within
Makawao	none detected	none detected	0 of 29	Within
Marine Corps Base Hawaii	none detected	none detected	0 of 29	Within
Mililani	none detected	none detected	0 of 29	Within
Nctams Eastpac	none detected	none detected	0 of 29	Within
North Kohala	none detected	none detected	0 of 29	Within
North Kona	none detected	none detected	0 of 29	Within
Olaa-mountain View	none detected	none detected	0 of 29	Within
Princeville	none detected	none detected	0 of 29	Within
Punahou School	none detected	none detected	0 of 29	Within
Schofield Barracks	none detected	none detected	0 of 29	Within
South Kohala	none detected	none detected	0 of 29	Within
South Kona	none detected	none detected	0 of 29	Within
The Queen's Medical Center	none detected	none detected	0 of 29	Within
Tripler Army Medical Cntr	none detected	none detected	0 of 29	Within
Upper Kula	none detected	none detected	0 of 29	Within
Wahiawa	none detected	none detected	0 of 29	Within
Waialee-sunset Beach	none detected	none detected	0 of 29	Within
Waialua	none detected	none detected	0 of 29	Within
Waikoloa	none detected	none detected	0 of 29	Within
Wailuku	none detected	none detected	0 of 29	Within
Waipahu-ewa-waianae	none detected	none detected	1 of 29	Within
Waipio Heights	none detected	none detected	0 of 29	Within

All 45 systems the EPA tested in Hawaii, every one of them with its own page. Each was tested for 29 PFAS compounds.

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Source, the EPA’s fifth Unregulated Contaminant Monitoring Rule, final dataset published 2026-10-15. Original data →