PFAS ("forever chemicals") · 2023
PFOS in Pasadena, CA tap water
Pasadena, CA's 2023 Consumer Confidence Report tested for PFOS and reported no detectable amount.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Average Pasadena Water System | Not detected ug/L | 0.004 ug/L MCL |
Range Pasadena Water System | Not detected ug/L | 0.004 ug/L MCL |
Verbatim from Pasadena, CA's 2023 Consumer Confidence Report — source document ↗
About PFOS
Perfluorooctanesulfonic acid, a PFAS 'forever chemical' once used in firefighting foam and coatings.
Linked to cancer, thyroid disease, and immune effects; the EPA set an enforceable limit of 4 parts per trillion.
How Pasadena, CA compares
5 of the 147 systems measuring PFOS on The Water Map have it at or above the federal limit:
Nearby systems also reporting PFOS:
People also ask
+Is there PFOS in Pasadena, CA tap water?
Pasadena, CA's 2023 Consumer Confidence Report tested for PFOS and found no detectable amount.
+What's the federal limit for PFOS in drinking water?
The federal MCL for PFOS is 0.004 ug/L. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+What is PFOS?
Perfluorooctanesulfonic acid, a PFAS 'forever chemical' once used in firefighting foam and coatings. Linked to cancer, thyroid disease, and immune effects; the EPA set an enforceable limit of 4 parts per trillion.
+Which other U.S. cities have PFOS over the federal limit?
5 of the 147 systems on The Water Map measuring PFOS report it at or above the federal limit. Examples include Charleston, SC, North Charleston, SC, City of Hialeah, FL.
+Where does this PFOS measurement come from?
This page reproduces the PFOS entry from the 2023 Consumer Confidence Report published by the Pasadena, 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/pasadena/2023/source.