What the EPA limit means
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No federal limit
The EPA has not set an enforceable numeric limit for this contaminant.
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Health goal (MCLG) — the level with no known health effect. It is a goal, not a legal limit, and is often zero for carcinogens.
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UCMR-5
Where these measurements come from. Hover the tag for the EPA programme and years.
Where PFNA was found
The water suppliers reporting the highest levels, worst first.
| Supplier | City | State | Level vs EPA limit |
|---|---|---|---|
| Emmaus Borough Public Water | Emmaus | PA | 0.0998 µg/L No EPA limit set |
| East Greenwich Twp Water Dept | East Greenwich twp.-0803 | NJ | 0.0733 µg/L No EPA limit set |
| Capitol Water Corp | Boise | ID | 0.0510 µg/L No EPA limit set |
| Locust Valley Wd | Oyster Bay | NY | 0.0296 µg/L No EPA limit set |
| City of Pflugerville | — | TX | 0.0252 µg/L No EPA limit set |
| Manville Wsc | Coupland | TX | 0.0243 µg/L No EPA limit set |
| Quakertown Boro | Quakertown | PA | 0.0240 µg/L No EPA limit set |
| Palmerton Municipal Authority | Palmerton | PA | 0.0211 µg/L No EPA limit set |
| Georgetown Water Department | Georgetown | DE | 0.0200 µg/L No EPA limit set |
| Manhasset Lakeville Wd | North Hempstead | NY | 0.0190 µg/L No EPA limit set |
| Westville Water Department | Westville boro-0821 | NJ | 0.0167 µg/L No EPA limit set |
| Emerald Coast Utilities Authority (Ecua) | Pensacola | FL | 0.0162 µg/L No EPA limit set |
| Ho Ho Kus Water Dept | Hohokus boro-0228 | NJ | 0.0161 µg/L No EPA limit set |
| West Deptford Twp Water Dept | West Deptford twp.-0820 | NJ | 0.0160 µg/L No EPA limit set |
| Brooklawn Water Departme | Brooklawn boro-0407 | NJ | 0.0153 µg/L No EPA limit set |
| Ambler Boro Water Dept | Ambler | PA | 0.0135 µg/L No EPA limit set |
| Fallsburg Who-Ls-Sf | Fallsburg | NY | 0.0123 µg/L No EPA limit set |
| Aqua Pa Main System | — | PA | 0.0120 µg/L No EPA limit set |
| Veolia Water Delaware, Inc | Wilmington | DE | 0.0116 µg/L No EPA limit set |
| City of Gridley | Gridley | CA | 0.0099 µg/L No EPA limit set |
| Veolia Water Bethel | — | PA | 0.0097 µg/L No EPA limit set |
| Williamsport Mun Water Auth | Williamsport | PA | 0.0097 µg/L No EPA limit set |
| Albertson Wd | North Hempstead | NY | 0.0082 µg/L No EPA limit set |
| Upper Hanover Water Authority | East Greenville | PA | 0.0082 µg/L No EPA limit set |
| Garden City Water and Sewer System | Garden City | ID | 0.0082 µg/L No EPA limit set |
Frequently asked questions about PFNA
What is PFNA in drinking water?
PFNA 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 PFNA?
The EPA has not set a numeric Maximum Contaminant Level for PFNA. It is still measured and reported, so levels can be compared between suppliers.
How common is PFNA in US tap water?
Of the 9,676 water suppliers with results on file, 77 detected PFNA — 0.8% of those tested.