PFAS ("forever chemicals") · 2026
Perfluoropentanesulfonic acid (PFPeS) in Los Angeles-city, Dept. of Water & Power, CA tap water
Los Angeles-city, Dept. of Water & Power, CA's 2026 report shows Perfluoropentanesulfonic acid (PFPeS) detected, but the EPA has not set an enforceable federal limit for it.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Highest single sample Entry point | Not detected NG/L | None set |
Average Source water | 1.105 NG/L | None set |
Highest single sample Source water | 3.1 NG/L | None set |
Verbatim from Los Angeles-city, Dept. of Water & Power, CA's 2026 Consumer Confidence Report — source document ↗
About Perfluoropentanesulfonic acid (PFPeS)
Perfluoropentanesulfonic acid, a PFAS 'forever chemical.'
Monitored under EPA rules; persistent in the environment.
How Los Angeles-city, Dept. of Water & Power, CA compares
1 of the 153 systems measuring Perfluoropentanesulfonic acid (PFPeS) on The Water Map have it at or above the federal limit:
Nearby systems also reporting Perfluoropentanesulfonic acid (PFPeS):
People also ask
+Is there Perfluoropentanesulfonic acid (PFPeS) in Los Angeles-city, Dept. of Water & Power, CA tap water?
Yes — Los Angeles-city, Dept. of Water & Power, CA's 2026 Consumer Confidence Report lists Perfluoropentanesulfonic acid (PFPeS) at 1.105 NG/L. Los Angeles-city, Dept. of Water & Power, CA's 2026 report shows Perfluoropentanesulfonic acid (PFPeS) detected, but the EPA has not set an enforceable federal limit for it.
+What's the federal limit for Perfluoropentanesulfonic acid (PFPeS) in drinking water?
The EPA has not set an enforceable federal limit for Perfluoropentanesulfonic acid (PFPeS). Utilities still report any measured levels in their annual Consumer Confidence Report.
+What is Perfluoropentanesulfonic acid (PFPeS)?
Perfluoropentanesulfonic acid, a PFAS 'forever chemical.' Monitored under EPA rules; persistent in the environment.
+Which other U.S. cities have Perfluoropentanesulfonic acid (PFPeS) over the federal limit?
1 of the 153 systems on The Water Map measuring Perfluoropentanesulfonic acid (PFPeS) report it at or above the federal limit. Examples include Boonsboro Keedysville, MD.
+Where does this Perfluoropentanesulfonic acid (PFPeS) measurement come from?
This page reproduces the Perfluoropentanesulfonic acid (PFPeS) entry from the 2026 Consumer Confidence Report published by the Los Angeles-city, Dept. of Water & Power, CA 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/ca/los-angeles-city-dept-of-water-power/2026/source.