PFOS in Pennsylvania water
PFOS was detected in 32 of 122 Pennsylvania cities with a published result, 30 of them above the federal limit.
30 cities above the federal limit
- AllentownAbove reference
- AmblerAbove reference
- Bcwsa Lower SouthAbove reference
- CarlisleAbove reference
- Carnot-MoonAbove reference
- Drexel HillAbove reference
- East HempfieldAbove reference
- ElizabethtownAbove reference
- EmmausAbove reference
- EphrataAbove reference
- GettysburgAbove reference
- HighridgeAbove reference
- HorshamAbove reference
- MechanicsburgAbove reference
- Mount PennAbove reference
- Muhlenberg Twp MuniAbove reference
- North WalesAbove reference
- Northampton Bucks MunAbove reference
- PerkasieAbove reference
- PhiladelphiaAbove reference
- PhoenixvilleAbove reference
- QuakertownAbove reference
- ScrantonAbove reference
- ShilohAbove reference
- Upper Southampton MunAbove reference
- Warwick TwpAbove reference
- WeigelstownAbove reference
- Western Allegheny County Mun AAbove reference
- Whitehall TwpAbove reference
- WilliamsportAbove reference
- Beaver Falls MuniDetected
- BerwickDetected
Not detected or no usable result: 90 cities
- AliquippaNot detected
- AltoonaNot detected
- AmbridgeNot detected
- Bear Valley JointNot detected
- Bethel ParkNot detected
- BethlehemNot detected
- BloomsburgNot detected
- BradfordNot detected
- Brodhead Creek RegNot detected
- ButlerNot detected
- Center TwpNot detected
- CentervilleNot detected
- ChambersburgNot detected
- CharleroiNot detected
- ChesterNot detected
- ClearfieldNot detected
- CoatesvilleNot detected
- Colonial ParkNot detected
- ColumbiaNot detected
- Creswell Heights JtNot detected
- CroydonNot detected
- DallastownNot detected
- East StroudsburgNot detected
- EastonNot detected
- ErieNot detected
- Falls TwpNot detected
- Findlay TwpNot detected
- Fox ChapelNot detected
- GuilfordNot detected
- Hampton ShalerNot detected
- HanoverNot detected
- HarrisburgNot detected
- Harrison TwpNot detected
- HazletonNot detected
- HermitageNot detected
- HersheyNot detected
- Highland S W BeaverdamNot detected
- HuntingdonNot detected
- IndianaNot detected
- JohnstownNot detected
- KingstonNot detected
- KutztownNot detected
- LancasterNot detected
- LatrobeNot detected
- Lca Wlsa CentralNot detected
- LebanonNot detected
- LevittownNot detected
- LewistownNot detected
- Lock HavenNot detected
- McKeesportNot detected
- MeadvilleNot detected
- MonroevilleNot detected
- MorrisvilleNot detected
- Mount JoyNot detected
- Mountain TopNot detected
- MurrysvilleNot detected
- New CastleNot detected
- New Kensington MuniNot detected
- NorristownNot detected
- North Fayette Cnty MuniNot detected
- NorthamptonNot detected
- Nwwa Warrington TownshipNot detected
- OakmontNot detected
- PennNot detected
- PittsburghNot detected
- PlumNot detected
- PottstownNot detected
- PottsvilleNot detected
- ReadingNot detected
- Red LionNot detected
- Richland TwpNot detected
- Robinson Twp MuniNot detected
- ShillingtonNot detected
- ShippensburgNot detected
- Slippery Rock MuniNot detected
- South Middleton TwpNot detected
- Southwestern PaNot detected
- St. MarysNot detected
- State College BoroNot detected
- Summit Township AuthoritNot detected
- SunburyNot detected
- SwtNot detected
- WarminsterNot detected
- WaynesboroNot detected
- West ChesterNot detected
- West ViewNot detected
- Wilkes-BarreNot detected
- Wilkinsburg-Penn JtNot detected
- WyomissingNot detected
- YorkNot 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 →