PFAS ("forever chemicals") · 2024
PFOA in Ontario, CA tap water
Ontario, CA's 2024 PFOA measurement is below the federal limit of 0.007 ng/L (Public health goal).
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Reported level Purchased Groundwater JCSD (870 Zone) | 0.46 ng/L | 0.007 ng/L Public health goal |
Reported level Local Groundwater | 0.63 ng/L | 0.007 ng/L Public health goal |
Reported level OMUC's Entire Distribution System | 1.4 ng/L | None set |
Reported level Purchased Groundwater CDA 1 (870 Zone) | Not detected ng/L | 0.007 ng/L Public health goal |
Reported level Purchased Groundwater CDA 2 (1110 Zone) | 0.18 ng/L | 0.007 ng/L Public health goal |
Verbatim from Ontario, CA's 2024 Consumer Confidence Report — source document ↗
About PFOA
Perfluorooctanoic acid, a PFAS 'forever chemical' once used in nonstick and stain-resistant products.
Linked to cancer, liver damage, and immune effects; the EPA set an enforceable limit of 4 parts per trillion.
How Ontario, CA compares
5 of the 46 CA systems measuring PFOA on The Water Map have it at or above the federal limit:
Nearby systems also reporting PFOA:
People also ask
+Is there PFOA in Ontario, CA tap water?
Yes — Ontario, CA's 2024 Consumer Confidence Report lists PFOA at 1.4 ng/L. Ontario, CA's 2024 PFOA measurement is below the federal limit of 0.007 ng/L (Public health goal).
+What's the federal limit for PFOA in drinking water?
The federal Public health goal for PFOA is 0.007 ng/L. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+What is PFOA?
Perfluorooctanoic acid, a PFAS 'forever chemical' once used in nonstick and stain-resistant products. Linked to cancer, liver damage, and immune effects; the EPA set an enforceable limit of 4 parts per trillion.
+Which other U.S. cities have PFOA over the federal limit?
5 of the 46 CA systems on The Water Map measuring PFOA report it at or above the federal limit. Examples include Lake Arrowhead Csd — Lake Arrowhead, Ca, CA, Glendale, CA, City of Bell Gardens — Downey, Ca, CA.
+Where does this PFOA measurement come from?
This page reproduces the PFOA entry from the 2024 Consumer Confidence Report published by the Ontario, 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/ontario/2024/source.