PFAS ("forever chemicals") · 2023
Perfluorohexanesulfonic acid in Montara Water and Sanitary District — Montara, Ca, CA tap water
Montara Water and Sanitary District — Montara, Ca, CA's 2023 Consumer Confidence Report shows Perfluorohexanesulfonic acid at or above the federal limit (3 ng/L NL). Measured value is 4.7× the threshold.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Reported level System-wide | 7 ng/L | 3 ng/L NL |
Range System-wide | 0–47 ng/L | 3 ng/L NL |
Verbatim from Montara Water and Sanitary District — Montara, Ca, CA's 2023 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 Montara Water and Sanitary District — Montara, Ca, CA compares
5 of the 284 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 Montara Water and Sanitary District — Montara, Ca, CA tap water?
Yes — Montara Water and Sanitary District — Montara, Ca, CA's 2023 Consumer Confidence Report lists Perfluorohexanesulfonic acid at 0–47 ng/L. Montara Water and Sanitary District — Montara, Ca, CA's 2023 Consumer Confidence Report shows Perfluorohexanesulfonic acid at or above the federal limit (3 ng/L NL). Measured value is 4.7× the threshold.
+What's the federal limit for Perfluorohexanesulfonic acid in drinking water?
The federal NL for Perfluorohexanesulfonic acid is 3 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 284 systems on The Water Map measuring Perfluorohexanesulfonic acid report it at or above the federal limit. Examples include Greensboro, NC, Riverside Highland Water Company — Grand Terrace, Ca, CA, Abilene, TX.
+Where does this Perfluorohexanesulfonic acid measurement come from?
This page reproduces the Perfluorohexanesulfonic acid entry from the 2023 Consumer Confidence Report published by the Montara Water and Sanitary District — Montara, Ca, 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/montara-water-and-sanitary-district-montara-ca/2023/source.