PFAS ("forever chemicals") · 2023
Perfluorobutanesulfonic acid in Cws - Kernville — San Jose, Ca, CA tap water
Cws - Kernville — San Jose, Ca, CA's 2023 report shows Perfluorobutanesulfonic acid detected, but the EPA has not set an enforceable federal limit for it.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Average Groundwater | 0.21 ng/L | 500 ng/L NL |
Range Groundwater | 0–2.2 ng/L | 500 ng/L NL |
Range Surface Water | Not detected ng/L | 500 ng/L NL |
Average Surface Water | Not detected ng/L | 500 ng/L NL |
Verbatim from Cws - Kernville — San Jose, Ca, CA's 2023 Consumer Confidence Report — source document ↗
About Perfluorobutanesulfonic acid
Perfluorobutanesulfonic acid, a shorter-chain PFAS 'forever chemical.'
Has no standalone limit but is part of the EPA PFAS Hazard Index that limits PFAS in combination.
How Cws - Kernville — San Jose, Ca, CA compares
Nearby systems also reporting Perfluorobutanesulfonic acid:
People also ask
+Is there Perfluorobutanesulfonic acid in Cws - Kernville — San Jose, Ca, CA tap water?
Yes — Cws - Kernville — San Jose, Ca, CA's 2023 Consumer Confidence Report lists Perfluorobutanesulfonic acid at 0.21 ng/L. Cws - Kernville — San Jose, Ca, CA's 2023 report shows Perfluorobutanesulfonic acid detected, but the EPA has not set an enforceable federal limit for it.
+What's the federal limit for Perfluorobutanesulfonic acid in drinking water?
The federal NL for Perfluorobutanesulfonic acid is 500 ng/L. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+What is Perfluorobutanesulfonic acid?
Perfluorobutanesulfonic acid, a shorter-chain PFAS 'forever chemical.' Has no standalone limit but is part of the EPA PFAS Hazard Index that limits PFAS in combination.
+Where does this Perfluorobutanesulfonic acid measurement come from?
This page reproduces the Perfluorobutanesulfonic acid entry from the 2023 Consumer Confidence Report published by the Cws - Kernville — San Jose, Ca, 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/cws-kernville-san-jose-ca/2023/source.