Drinking water / AK
PFAS in Alaska drinking water
30 Alaska public water systems tested under UCMR5. 9 detected at least one PFAS compound; 21 detected none at the reporting thresholds. Values are the highest single result per compound, in ng/L (parts per trillion). The federal limit for PFOA and PFOS is 4 ng/L.
| Water system | Serves | Highest results (ng/L) | Reading |
|---|---|---|---|
| BARROW UTILITIES & ELEC. COOP., INC. (BU AK2320078 | North Slope | PFOS 46.3 *PFHxS 18.5PFBA 11.5PFHxA 8.1 | above final limit |
| COLLEGE UTILITIES CORPORATION AK2310900 | Fairbanks North Star | PFHxS 10.5PFOA 6.4 *PFHxA 4.3PFPeA 3.9 | above final limit |
| GOLDEN HEART UTILITIES AK2310730 | Fairbanks North Star | PFHxS 8.8PFOA 5.4 *PFHxA 3.7PFPeA 3.3 | above final limit |
| MOA MUNICIPALITY OF ANCHORAGE AK2210906 | Anchorage | PFHxS 11.2PFOA 9.1 * | above final limit |
| CORDOVA CITY WATER AK2293205 | - | PFBA 37.1 | detected |
| EIELSON - AIR FORCE BASE AK2370625 | Fairbanks North Star | PFPeA 3 | detected |
| FT WAINWRIGHT - MAIN POST AK2310918 | Fairbanks North Star | PFHxS 4.3 | detected |
| UNIVERSITY OF ALASKA - FAIRBANKS AK2310683 | Fairbanks North Star | PFHxS 5.7PFHxA 3.1 | detected |
| WASILLA WATER SYSTEM AK2224646 | Matanuska-Susitna | PFHxS 4.2 | detected |
* exceeds the final federal MCL for that compound. Detections of compounds whose limits EPA proposed to rescind in May 2026 are shown for information.
Systems with no PFAS detected
21 tested systems reported no PFAS above the laboratory reporting limits. Each has its own page with its sampling detail.
- ALYESKA CREEKSIDE APARTMENTS
- CITY AND BOROUGH OF JUNEAU
- DENALI - MAIN / FRONT COUNTRY
- DOYON UTILITIES JBER - RICHARDSON
- EEK WATER SYSTEM
- FT. GREELY / DU / ALLEN ARMY AIRFIELD
- HOMER WATER SYSTEM
- JBER-ELMENDORF
- KENAI WATER SYSTEM
- KETCHIKAN PUBLIC UTILITIES
- KODIAK WATER SYSTEM
- NOME JOINT UTILITY SYSTEM
- NORTH POLE UTILITIES
- PALMER WATER SYSTEM
- SEWARD
- SITKA
- SKAGWAY
- SOLDOTNA
- UNALASKA WATER SYSTEM
- VALDEZ WATER SYSTEM - MAIN
- VALLI VUE S/D WATER SYSTEM
A detection at the system level does not tell you what reaches one specific tap: levels vary by entry point, treatment train and plumbing. A certified lab test of your own tap settles it. Testing and treatment options