PFOS in Washington water
PFOS was detected in 20 of 122 Washington cities with a published result, 20 of them above the federal limit.
20 cities above the federal limit
- CamasAbove reference
- CentraliaAbove reference
- ClarkAbove reference
- Covington DistrictAbove reference
- FairwoodAbove reference
- Federal WayAbove reference
- Fort LewisAbove reference
- GrahamAbove reference
- KennewickAbove reference
- LakewoodAbove reference
- Moses LakeAbove reference
- OlympiaAbove reference
- ParklandAbove reference
- RedmondAbove reference
- RichlandAbove reference
- SammamishAbove reference
- SpanawayAbove reference
- SpokaneAbove reference
- VancouverAbove reference
- WashougalAbove reference
Not detected or no usable result: 102 cities
- AberdeenNot detected
- Airway HeightsNot detected
- Alderwood DistrictNot detected
- AnacortesNot detected
- ArlingtonNot detected
- AuburnNot detected
- Bainbridge IslandNot detected
- Battle GroundNot detected
- Beacon Hill DistrictNot detected
- BellevueNot detected
- BellinghamNot detected
- Birch BayNot detected
- Bonney LakeNot detected
- BothellNot detected
- BremertonNot detected
- Cedar River DistrictNot detected
- ChehalisNot detected
- ChelanNot detected
- CheneyNot detected
- ClarkstonNot detected
- Consolidated Irrig Dist 19Not detected
- Cottage LakeNot detected
- Cross Valley DistrictNot detected
- DuPontNot detected
- DuvallNot detected
- East Renton HighlandsNot detected
- East Wenatchee DistrictNot detected
- EdgewoodNot detected
- EdmondsNot detected
- EllensburgNot detected
- EnumclawNot detected
- EverettNot detected
- FerndaleNot detected
- FifeNot detected
- Gig HarborNot detected
- GrandviewNot detected
- HoquiamNot detected
- IssaquahNot detected
- KelsoNot detected
- KentNot detected
- King County DistrictNot detected
- KirklandNot detected
- LaceyNot detected
- Lake Meridian DistrictNot detected
- Lake StevensNot detected
- Liberty LakeNot detected
- LongviewNot detected
- Lwwsd - South ShoreNot detected
- LyndenNot detected
- LynnwoodNot detected
- Manchester DistrictNot detected
- MarysvilleNot detected
- Mercer IslandNot detected
- MonroeNot detected
- Mount VernonNot detected
- Mountlake TerraceNot detected
- Mukilteo DistrNot detected
- NewcastleNot detected
- North City DistrictNot detected
- North PeninsulaNot detected
- North Perry Ave DistrictNot detected
- Northshore DistrictNot detected
- Oak HarborNot detected
- Olympic View DistrictNot detected
- OrtingNot detected
- PascoNot detected
- Port AngelesNot detected
- Port OrchardNot detected
- Port TownsendNot detected
- PoulsboNot detected
- ProsserNot detected
- PullmanNot detected
- PuyallupNot detected
- QuimperNot detected
- RentonNot detected
- RidgefieldNot detected
- SeaTacNot detected
- SeattleNot detected
- SequimNot detected
- SheltonNot detected
- Silver Lake DistrictNot detected
- SilverdaleNot detected
- SkywayNot detected
- SnohomishNot detected
- SnoqualmieNot detected
- Soos Creek DistrictNot detected
- Spo Dist 3 SysNot detected
- StanwoodNot detected
- SumnerNot detected
- SunnysideNot detected
- TacomaNot detected
- ToppenishNot detected
- TukwilaNot detected
- TumwaterNot detected
- Vera PowerNot detected
- Walla WallaNot detected
- WenatcheeNot detected
- West RichlandNot detected
- West Sound DistrictNot detected
- WoodlandNot detected
- YakimaNot detected
- YelmNot detected
Values are from the published EPA record; a contaminant that was never tested is shown as pending, never as a pass. A system-level result, not a measurement of any single home.
What can carry a PFOS reduction claim
- Reverse osmosis
Semi-permeable membrane separation removing dissolved minerals, heavy metals, and persistent fluorinated chemicals down to 0.0001 microns.
- Activated carbon (GAC)
Highly porous adsorption media targeting chlorine, disinfection byproducts, volatile organic compounds, and organic chemicals.
- Anion exchange
Synthetic polyvalent resin beads that exchange unwanted dissolved ionic contaminants for harmless benchmark ions.
Boiling does not remove a dissolved chemical compound and can concentrate it. Many pitcher and refrigerator filters carry no verified claim for a compound like this at all.
A finding establishes the need, the need names the capability, the capability requires a verified certification. No product appears before that sequence completes. Filter Finder →