PFAS ("forever chemicals") · 2024
Perfluorohexanesulfonic acid in Tempe, AZ tap water
Tempe, AZ's 2024 Perfluorohexanesulfonic acid measurement is below the federal limit of 10 ng/L (MCL).
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Range System-wide | 0–71 ng/L | None set |
Average System-wide | Not detected ng/L | 10 ng/L MCL |
Range System-wide | 0–8 ng/L | 10 ng/L MCL |
Average System-wide | 7 ng/L | 10 ng/L MCL |
Verbatim from Tempe, 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 Tempe, AZ compares
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People also ask
+Is there Perfluorohexanesulfonic acid in Tempe, AZ tap water?
Yes — Tempe, AZ's 2024 Consumer Confidence Report lists Perfluorohexanesulfonic acid at 7 ng/L. Tempe, AZ's 2024 Perfluorohexanesulfonic acid measurement is below the federal limit of 10 ng/L (MCL).
+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.
+Where does this Perfluorohexanesulfonic acid measurement come from?
This page reproduces the Perfluorohexanesulfonic acid entry from the 2024 Consumer Confidence Report published by the Tempe, 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/tempe/2024/source.