PFAS ("forever chemicals") · 2025
PFBA in Irvine Ranch Water District, CA tap water
Irvine Ranch Water District, CA's 2025 report shows PFBA detected, but the EPA has not set an enforceable federal limit for it.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Average Source water | 3.0571428571428574 NG/L | None set |
Average Entry point | 6.777551020408164 NG/L | None set |
Highest single sample Entry point | 7.9 ng/L | None set |
Highest single sample Entry point | 9.1 NG/L | None set |
Highest single sample Source water | 10.1 NG/L | None set |
Verbatim from Irvine Ranch Water District, CA's 2025 Consumer Confidence Report — source document ↗
About PFBA
Perfluorobutanoic acid, a shorter-chain PFAS 'forever chemical.'
Monitored under EPA rules; persistent in the environment and the human body.
How Irvine Ranch Water District, CA compares
5 of the 219 systems measuring PFBA on The Water Map have it at or above the federal limit:
Nearby systems also reporting PFBA:
People also ask
+Is there PFBA in Irvine Ranch Water District, CA tap water?
Yes — Irvine Ranch Water District, CA's 2025 Consumer Confidence Report lists PFBA at 6.777551020408164 NG/L. Irvine Ranch Water District, CA's 2025 report shows PFBA detected, but the EPA has not set an enforceable federal limit for it.
+What's the federal limit for PFBA in drinking water?
The EPA has not set an enforceable federal limit for PFBA. Utilities still report any measured levels in their annual Consumer Confidence Report.
+What is PFBA?
Perfluorobutanoic acid, a shorter-chain PFAS 'forever chemical.' Monitored under EPA rules; persistent in the environment and the human body.
+Which other U.S. cities have PFBA over the federal limit?
5 of the 219 systems on The Water Map measuring PFBA report it at or above the federal limit. Examples include City of Hampton, VA, City of Poquoson, VA, Hampton, VA.
+Where does this PFBA measurement come from?
This page reproduces the PFBA entry from the 2025 Consumer Confidence Report published by the Irvine Ranch Water District, 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/irvine-ranch-water-district/2025/source.