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Drinking water / OR

PFAS in Oregon drinking water

127 Oregon public water systems tested under UCMR5. 18 detected at least one PFAS compound; 109 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 systemServesHighest results (ng/L)Reading
BEND WATER DEPARTMENT

OR4100100

DeschutesPFPeA 8.7PFOA 7.9 *PFHxA 4.7PFHpA 4.2above final limit
DUNDEE, CITY OF

OR4100262

YamhillPFOS 5.4 *above final limit
HERMISTON, CITY OF

OR4100372

UmatillaPFHxS 12PFOS 12 *PFBS 10PFPeA 4.2above final limit
KLAMATH FALLS WATER DEPT

OR4100443

KlamathPFOS 9.5 *PFHxS 5.8PFBS 4.3above final limit
MARCOLA WATER DISTRICT

OR4100508

LanePFHxS 7.4PFOS 6.8 *above final limit
MILTON-FREEWATER, CITY OF

OR4100522

UmatillaPFOS 7.2 *PFHxS 3.2above final limit
MILWAUKIE, CITY OF

OR4100528

ClackamasPFOS 7 *above final limit
RAINBOW WATER DISTRICT

OR4100839

LanePFOS 9.4 *PFOA 4.2 *PFBS 3.8above final limit
RUCH ELEMENTARY SD 549

OR4191508

JacksonPFHxS 33.4PFBS 14.8PFHxA 13.9PFPeA 13.6above final limit
SPRINGFIELD UTILITY BOARD

OR4100837

LanePFPeA 18.6PFHxA 12.4PFBA 10.5PFHpA 7.1above final limit
SUNRISE WATER AUTHORITY

OR4100635

ClackamasPFOS 4.3 *above final limit
ESTACADA, CITY OF

OR4100279

ClackamasPFBA 7.4detected
INDEPENDENCE WATER SYSTEM

OR4100399

PolkPFBS 3.4detected
KEIZER, CITY OF

OR4100744

MarionPFHxS 3.9detected
MOLALLA, CITY OF

OR4100534

Clackamas6:2 FTS 11.3detected
PENDLETON, CITY OF

OR4100613

UmatillaPFHxS 4.8detected
SHERWOOD, CITY OF

OR4100816

Washington6:2 FTS 41.38:2 FTS 8detected
ST HELENS, CITY OF

OR4100724

ColumbiaPFBS 15.5detected

* 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

109 tested systems reported no PFAS above the laboratory reporting limits. Each has its own page with its sampling detail.

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