PFAS ("forever chemicals") · 2024
PFOA in Thornton, CO tap water
Thornton, CO's 2024 PFOA level is between 80% and 100% of the federal limit (4 ng/L MCL) — measured but not in violation.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Range System-wide | 0–3.9 ng/L | 4 ng/L MCL |
Verbatim from Thornton, CO'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 Thornton, CO compares
1 of the 2 CO 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 Thornton, CO tap water?
Yes — Thornton, CO's 2024 Consumer Confidence Report lists PFOA at 0–3.9 ng/L. Thornton, CO's 2024 PFOA level is between 80% and 100% of the federal limit (4 ng/L MCL) — measured but not in violation.
+What's the federal limit for PFOA in drinking water?
The federal MCL for PFOA 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 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?
1 of the 2 CO systems on The Water Map measuring PFOA report it at or above the federal limit. Examples include Centennial, CO.
+Where does this PFOA measurement come from?
This page reproduces the PFOA entry from the 2024 Consumer Confidence Report published by the Thornton, CO 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/co/thornton/2024/source.