PFAS ("forever chemicals") · 2023
PFOS in Sweetwater Authority — Chula Vista, Ca, CA tap water
Sweetwater Authority — Chula Vista, Ca, CA's 2023 Consumer Confidence Report shows PFOS at or above the federal limit (4 ng/L MCL). Measured value is 8.3× the threshold.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Reported level SD Formation Wells 1 - 11 | 5.4 ng/L | 4 ng/L MCL |
Reported level National City Well 4 | Not detected ng/L | 4 ng/L MCL |
Reported level National City Well 4 | Not detected ng/L | 4 ng/L MCL |
Reported level Treated Sweetwater Authority Drinking Water | 0–5.7 ng/L | 4 ng/L MCL |
Reported level National City Well 2 | Not detected ng/L | 4 ng/L MCL |
Reported level National City Well 2 | Not detected ng/L | 4 ng/L MCL |
Reported level SD Formation Wells 1 - 11 | 0–33 ng/L | 4 ng/L MCL |
Reported level Treated Sweetwater Authority Drinking Water | Not detected ng/L | 4 ng/L MCL |
Reported level Lake Skinner Outlet (Aqueduct) | Not detected ng/L | 4 ng/L MCL |
Reported level National City Well 3 | Not detected ng/L | 4 ng/L MCL |
Reported level Lake Skinner Outlet (Aqueduct) | Not detected ng/L | 4 ng/L MCL |
Reported level National City Well 3 | Not detected ng/L | 4 ng/L MCL |
Verbatim from Sweetwater Authority — Chula Vista, 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 Sweetwater Authority — Chula Vista, 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 Sweetwater Authority — Chula Vista, Ca, CA tap water?
Yes — Sweetwater Authority — Chula Vista, Ca, CA's 2023 Consumer Confidence Report lists PFOS at 0–33 ng/L. Sweetwater Authority — Chula Vista, Ca, CA's 2023 Consumer Confidence Report shows PFOS at or above the federal limit (4 ng/L MCL). Measured value is 8.3× the threshold.
+What's the federal limit for PFOS in drinking water?
The federal MCL for PFOS is 4 ng/L. 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 Sweetwater Authority — Chula Vista, 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/sweetwater-authority-chula-vista-ca/2023/source.