PFAS ("forever chemicals") · 2025
Hexafluoropropylene oxide dimer acid in City of San Jose - Evg/edv/coy, CA tap water
City of San Jose - Evg/edv/coy, CA's 2025 report shows Hexafluoropropylene oxide dimer acid detected, but the EPA has not set an enforceable federal limit for it.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Average Source water | 1.4941176470588236 NG/L | None set |
Highest single sample Source water | 11 NG/L | None set |
Verbatim from City of San Jose - Evg/edv/coy, CA's 2025 Consumer Confidence Report — source document ↗
About Hexafluoropropylene oxide dimer acid
HFPO-DA ('GenX chemicals'), a newer-generation PFAS replacement compound.
Regulated by the EPA at 10 parts per trillion and included in the PFAS Hazard Index.
How City of San Jose - Evg/edv/coy, CA compares
1 of the 190 systems measuring Hexafluoropropylene oxide dimer acid on The Water Map have it at or above the federal limit:
Nearby systems also reporting Hexafluoropropylene oxide dimer acid:
People also ask
+Is there Hexafluoropropylene oxide dimer acid in City of San Jose - Evg/edv/coy, CA tap water?
Yes — City of San Jose - Evg/edv/coy, CA's 2025 Consumer Confidence Report lists Hexafluoropropylene oxide dimer acid at 1.4941176470588236 NG/L. City of San Jose - Evg/edv/coy, CA's 2025 report shows Hexafluoropropylene oxide dimer acid detected, but the EPA has not set an enforceable federal limit for it.
+What's the federal limit for Hexafluoropropylene oxide dimer acid in drinking water?
The EPA has not set an enforceable federal limit for Hexafluoropropylene oxide dimer acid. Utilities still report any measured levels in their annual Consumer Confidence Report.
+What is Hexafluoropropylene oxide dimer acid?
HFPO-DA ('GenX chemicals'), a newer-generation PFAS replacement compound. Regulated by the EPA at 10 parts per trillion and included in the PFAS Hazard Index.
+Which other U.S. cities have Hexafluoropropylene oxide dimer acid over the federal limit?
1 of the 190 systems on The Water Map measuring Hexafluoropropylene oxide dimer acid report it at or above the federal limit. Examples include Boonsboro Keedysville, MD.
+Where does this Hexafluoropropylene oxide dimer acid measurement come from?
This page reproduces the Hexafluoropropylene oxide dimer acid entry from the 2025 Consumer Confidence Report published by the City of San Jose - Evg/edv/coy, 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/san-jose-evg-edv-coy/2025/source.