PFAS ("forever chemicals") · 2023
Perfluorobutanesulfonic acid in Estero Municipal Improvement District — Foster City, Ca, CA tap water
Estero Municipal Improvement District — Foster City, 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 SFPUC | 3 ng/L | 3 ng/L NL |
Range SFPUC | 0–3 ng/L | 3 ng/L NL |
Range SFPUC | 0–3 ng/L | 500 ng/L NL |
Average SFPUC | 3 ng/L | 500 ng/L NL |
Verbatim from Estero Municipal Improvement District — Foster City, 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 Estero Municipal Improvement District — Foster City, Ca, CA compares
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People also ask
+Is there Perfluorobutanesulfonic acid in Estero Municipal Improvement District — Foster City, Ca, CA tap water?
Yes — Estero Municipal Improvement District — Foster City, Ca, CA's 2023 Consumer Confidence Report lists Perfluorobutanesulfonic acid at 3 ng/L. Estero Municipal Improvement District — Foster City, 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 3 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 Estero Municipal Improvement District — Foster City, 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/estero-municipal-improvement-district-foster-city-ca/2023/source.