PFAS ("forever chemicals") · 2023
Perfluorononanoic acid in Philadelphia, PA tap water
Philadelphia, PA's 2023 Perfluorononanoic acid measurement is below the federal limit of 10 ng/L (MCL).
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Maximum System-wide | 4 ng/L | 10 ng/L MCL |
Range System-wide | 0–4 ng/L | 10 ng/L MCL |
Average System-wide | 0.8 ng/L | None set |
Range System-wide | 0–4.5 ng/L | None set |
Verbatim from Philadelphia, PA's 2023 Consumer Confidence Report — source document ↗
About Perfluorononanoic acid
Perfluorononanoic 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 Perfluorononanoic acid in Philadelphia, PA tap water?
Yes — Philadelphia, PA's 2023 Consumer Confidence Report lists Perfluorononanoic acid at 0.8 ng/L. Philadelphia, PA's 2023 Perfluorononanoic acid measurement is below the federal limit of 10 ng/L (MCL).
+What's the federal limit for Perfluorononanoic acid in drinking water?
The federal MCL for Perfluorononanoic 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 Perfluorononanoic acid?
Perfluorononanoic acid, a PFAS 'forever chemical.' Regulated by the EPA at 10 parts per trillion and included in the PFAS Hazard Index.
+Where does this Perfluorononanoic acid measurement come from?
This page reproduces the Perfluorononanoic 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.