PFAS in District of Columbia tap water
0 of 3 tested systems measured above the federal limit. 3 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 |
|---|---|---|---|---|
| D.c. Water and Sewer Authority | none detected | none detected | 2 of 29 | Within |
| Joint Base Anacostia - Bolling | none detected | none detected | 2 of 29 | Within |
| Naval Station Washington - Wny | none detected | none detected | 2 of 29 | Within |
All 3 systems the EPA tested in District of Columbia, every one of them with its own page. Each was tested for 29 PFAS compounds.
Other states
AlabamaAlaskaArizonaArkansasCaliforniaColoradoConnecticutDelawareFloridaGeorgiaHawaiiIdahoIllinoisIndianaIowaKansasKentuckyLouisianaMaineMarylandMassachusettsMichiganMinnesotaMississippiMissouriMontanaNebraskaNevadaNew HampshireNew JerseyNew MexicoNew YorkNorth CarolinaNorth DakotaOhioOklahomaOregonPennsylvaniaRhode IslandSouth CarolinaSouth DakotaTennesseeTexasUtahVermontVirginiaWashingtonWest VirginiaWisconsinWyomingPuerto RicoGuamthe U.S. Virgin IslandsAmerican Samoathe Northern Mariana Islandsthe Navajo Nation
Graded water filters you can buy today
The best graded product in each filter type we cover.
- AquaTru AquaTru Under Sink Under SinkExcellent 100/100Check price
- Watts Water Technologies Watts BB-S101 Whole Home SystemExcellent 95/100Check price
- VOSS VOSS stillExcellent 100/100Check price
- LARQ LARQ PitcherExcellent 100/100Check price
We may earn a commission on these links, at no cost to you. It never changes a grade.
Source, the EPA’s fifth Unregulated Contaminant Monitoring Rule, final dataset published 2026-10-15. Original data →