PFAS ("forever chemicals") · 2024
Perfluorohexanesulfonic acid in Mesa, AZ tap water
Mesa, AZ's 2024 Perfluorohexanesulfonic acid level is between 80% and 100% of the federal limit (10 ng/L MCL) — measured but not in violation.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Highest single sample Entry point | 9.299999999999999 ng/L | 10 ng/L MCL |
Verbatim from Mesa, AZ's 2024 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 Mesa, AZ compares
5 of the 116 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 Mesa, AZ tap water?
Yes — Mesa, AZ's 2024 Consumer Confidence Report lists Perfluorohexanesulfonic acid at 9.299999999999999 ng/L. Mesa, AZ's 2024 Perfluorohexanesulfonic acid level is between 80% and 100% of the federal limit (10 ng/L MCL) — measured but not in violation.
+What's the federal limit for Perfluorohexanesulfonic acid in drinking water?
The federal MCL for Perfluorohexanesulfonic acid is 10 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 116 systems on The Water Map measuring Perfluorohexanesulfonic acid report it at or above the federal limit. Examples include Burbank, CA, Chula Vista Sweetwater, CA, Chico, CA.
+Where does this Perfluorohexanesulfonic acid measurement come from?
This page reproduces the Perfluorohexanesulfonic acid entry from the 2024 Consumer Confidence Report published by the Mesa, AZ 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/az/mesa/2024/source.