Yes — Derby, CT's 2024 Consumer Confidence Report lists Perfluoropentanoic acid at 0–3.1 ng/L. Derby, CT's 2024 report shows Perfluoropentanoic acid detected, but the EPA has not set an enforceable federal limit for it.

+What's the federal limit for Perfluoropentanoic acid in drinking water?

The EPA has not set an enforceable federal limit for Perfluoropentanoic acid. Utilities still report any measured levels in their annual Consumer Confidence Report.

+What is Perfluoropentanoic acid?

Perfluoropentanoic acid, a shorter-chain PFAS 'forever chemical.' Monitored under EPA rules; persistent in the environment.

+Which other U.S. cities have Perfluoropentanoic acid over the federal limit?

5 of the 123 systems on The Water Map measuring Perfluoropentanoic acid report it at or above the federal limit. Examples include New Braunfels, TX, Burbank, CA, Tampa, FL.

+Where does this Perfluoropentanoic acid measurement come from?

This page reproduces the Perfluoropentanoic acid entry from the 2024 Consumer Confidence Report published by the Derby, CT 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/ct/derby/2024/source.

Full report

All Derby, CT water-quality data →

Every contaminant measured in the 2024 report.

Contaminant pillar

Perfluoropentanoic acid across the U.S. →

Every public water system measuring Perfluoropentanoic acid, ranked.