PFAS ("forever chemicals") · 2023
Perfluorohexanesulfonic acid in Philadelphia, PA tap water
Philadelphia, PA's 2023 Perfluorohexanesulfonic acid measurement is below the federal limit of 10 ng/L (MCL).
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Maximum System-wide | 1.9 ng/L | 10 ng/L MCL |
Range System-wide | 0–1.9 ng/L | 10 ng/L MCL |
Verbatim from Philadelphia, PA's 2023 Consumer Confidence Report — source document ↗
About Perfluorohexanesulfonic acid
Perfluorohexanesulfonic acid, a PFAS 'forever chemical.'
Regulated by the EPA at 10 parts per trillion and included in the PFAS Hazard Index.
People also ask
+Is there Perfluorohexanesulfonic acid in Philadelphia, PA tap water?
Yes — Philadelphia, PA's 2023 Consumer Confidence Report lists Perfluorohexanesulfonic acid at 1.9 ng/L. Philadelphia, PA's 2023 Perfluorohexanesulfonic acid measurement is below the federal limit of 10 ng/L (MCL).
+What's the federal limit for Perfluorohexanesulfonic acid in drinking water?
The federal MCL for Perfluorohexanesulfonic acid is 10 ng/L. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+What is Perfluorohexanesulfonic acid?
Perfluorohexanesulfonic acid, a PFAS 'forever chemical.' Regulated by the EPA at 10 parts per trillion and included in the PFAS Hazard Index.
+Where does this Perfluorohexanesulfonic acid measurement come from?
This page reproduces the Perfluorohexanesulfonic acid entry from the 2023 Consumer Confidence Report published by the Philadelphia, PA water utility — the annual drinking-water report every U.S. utility is required by federal law to publish. The original source document is archived at /water/pa/philadelphia/2023/source.