PFAS ("forever chemicals") · 2023
PFOS in Dublin San Ramon Services District — Pleasanton, Ca, CA tap water
Dublin San Ramon Services District — Pleasanton, Ca, CA's 2023 report shows PFOS detected, but the EPA has not set an enforceable federal limit for it.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Average Groundwater | Not detected | 4 MCL |
Range Groundwater | 0–4.5 | 4 MCL |
Average Surface Water | Not detected | 4 MCL |
Range Surface Water | Not detected | 4 MCL |
Verbatim from Dublin San Ramon Services District — Pleasanton, Ca, CA's 2023 Consumer Confidence Report — source document ↗
About PFOS
Perfluorooctanesulfonic acid, a PFAS 'forever chemical' once used in firefighting foam and coatings.
Linked to cancer, thyroid disease, and immune effects; the EPA set an enforceable limit of 4 parts per trillion.
How Dublin San Ramon Services District — Pleasanton, Ca, CA compares
5 of the 328 systems measuring PFOS on The Water Map have it at or above the federal limit:
Nearby systems also reporting PFOS:
People also ask
+Is there PFOS in Dublin San Ramon Services District — Pleasanton, Ca, CA tap water?
Yes — Dublin San Ramon Services District — Pleasanton, Ca, CA's 2023 Consumer Confidence Report lists PFOS at Not detected. Dublin San Ramon Services District — Pleasanton, Ca, CA's 2023 report shows PFOS detected, but the EPA has not set an enforceable federal limit for it.
+What's the federal limit for PFOS in drinking water?
The federal MCL for PFOS is 4 . The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+What is PFOS?
Perfluorooctanesulfonic acid, a PFAS 'forever chemical' once used in firefighting foam and coatings. Linked to cancer, thyroid disease, and immune effects; the EPA set an enforceable limit of 4 parts per trillion.
+Which other U.S. cities have PFOS over the federal limit?
5 of the 328 systems on The Water Map measuring PFOS 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 PFOS measurement come from?
This page reproduces the PFOS entry from the 2023 Consumer Confidence Report published by the Dublin San Ramon Services District — Pleasanton, 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/dublin-san-ramon-services-district-pleasanton-ca/2023/source.