PFAS ("forever chemicals") · 2025
Perfluorohexanesulfonic acid in York County, VA tap water
York County, VA's 2025 Consumer Confidence Report shows Perfluorohexanesulfonic acid at or above the federal limit (2 ng/L MCL). Measured value is 1.9× the threshold.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Maximum System-wide | 3.7 ng/L | 2 ng/L MCL |
Range System-wide | 0–3.7 ng/L | 2 ng/L MCL |
Verbatim from York County, VA's 2025 Consumer Confidence Report — source document ↗
About Perfluorohexanesulfonic acid
Perfluorohexanesulfonic acid, a PFAS 'forever chemical.'
Regulated by the EPA at 10 parts per trillion and included in the PFAS Hazard Index.
How York County, VA compares
5 of the 128 systems measuring Perfluorohexanesulfonic acid on The Water Map have it at or above the federal limit:
Nearby systems also reporting Perfluorohexanesulfonic acid:
People also ask
+Is there Perfluorohexanesulfonic acid in York County, VA tap water?
Yes — York County, VA's 2025 Consumer Confidence Report lists Perfluorohexanesulfonic acid at 3.7 ng/L. York County, VA's 2025 Consumer Confidence Report shows Perfluorohexanesulfonic acid at or above the federal limit (2 ng/L MCL). Measured value is 1.9× the threshold.
+What's the federal limit for Perfluorohexanesulfonic acid in drinking water?
The federal MCL for Perfluorohexanesulfonic acid is 2 ng/L. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+What is Perfluorohexanesulfonic acid?
Perfluorohexanesulfonic acid, a PFAS 'forever chemical.' Regulated by the EPA at 10 parts per trillion and included in the PFAS Hazard Index.
+Which other U.S. cities have Perfluorohexanesulfonic acid over the federal limit?
5 of the 128 systems on The Water Map measuring Perfluorohexanesulfonic acid report it at or above the federal limit. Examples include New Braunfels, TX, Burbank, CA, Chula Vista Sweetwater, CA.
+Where does this Perfluorohexanesulfonic acid measurement come from?
This page reproduces the Perfluorohexanesulfonic acid entry from the 2025 Consumer Confidence Report published by the York County, VA 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/va/york-county/2025/source.