What the EPA limit means
No federal limit
The EPA has not set an enforceable numeric limit for this contaminant.
—
Health goal (MCLG) — the level with no known health effect. It is a goal, not a legal limit, and is often zero for carcinogens.
UCMR-5
Where these measurements come from. Hover the tag for the EPA programme and years.
Where PFOA was found
The water suppliers reporting the highest levels, worst first.
| Supplier | City | State | Level vs EPA limit |
|---|---|---|---|
| Collegeville Trappe Joint Pwd | Trappe | PA | 0.2350 µg/L No EPA limit set |
| Raynham Center Water District | Raynham | MA | 0.0920 µg/L No EPA limit set |
| Caernarvon Twp Auth | Morgantown | PA | 0.0558 µg/L No EPA limit set |
| Collinsville Water Works | Collinsville | AL | 0.0525 µg/L No EPA limit set |
| Bealeton Regional | Warrenton | VA | 0.0446 µg/L No EPA limit set |
| Livingston Twp Div of Water | Livingston twp.-0710 | NJ | 0.0440 µg/L No EPA limit set |
| Palmerton Municipal Authority | Palmerton | PA | 0.0425 µg/L No EPA limit set |
| Verona Water Department | Verona boro-0720 | NJ | 0.0423 µg/L No EPA limit set |
| Payson Town of | Payson | AZ | 0.0409 µg/L No EPA limit set |
| Gonzalez Utilities Association, Inc. | Cantonment | FL | 0.0392 µg/L No EPA limit set |
| Tempe City of | Tempe | AZ | 0.0387 µg/L No EPA limit set |
| Georgetown Water Department | Georgetown | DE | 0.0360 µg/L No EPA limit set |
| Savannah Valley U.D. | Georgetown | TN | 0.0350 µg/L No EPA limit set |
| Columbus | Columbus | GA | 0.0339 µg/L No EPA limit set |
| City of Atwater | Atwater | CA | 0.0330 µg/L No EPA limit set |
| Gadsden, the Wwsb of the City of | Gadsden | AL | 0.0320 µg/L No EPA limit set |
| Ridgewood Water | Ridgewood twp-0251 | NJ | 0.0314 µg/L No EPA limit set |
| Grand Bay Water Works Board | Grand Bay | AL | 0.0314 µg/L No EPA limit set |
| Lafayette | La Fayette | GA | 0.0310 µg/L No EPA limit set |
| Pa American Audubon | Norristown | PA | 0.0308 µg/L No EPA limit set |
| Ho Ho Kus Water Dept | Hohokus boro-0228 | NJ | 0.0304 µg/L No EPA limit set |
| Ontario Municipal Utilities Company | Ontario | CA | 0.0300 µg/L No EPA limit set |
| Robeson County Water System | Maxton | NC | 0.0300 µg/L No EPA limit set |
| Augusta-Richmond Co Ws | Augusta | GA | 0.0299 µg/L No EPA limit set |
| Town of Anthony | Anthony | TX | 0.0291 µg/L No EPA limit set |
Frequently asked questions about PFOA
What is PFOA in drinking water?
PFOA is monitored in US public drinking water under EPA rules. Each supplier's result is reported to the EPA and published here with its source and period.
Does the EPA limit PFOA?
The EPA has not set a numeric Maximum Contaminant Level for PFOA. It is still measured and reported, so levels can be compared between suppliers.
How common is PFOA in US tap water?
Of the 9,676 water suppliers with results on file, 1,222 detected PFOA — 12.6% of those tested.