PFAS ("forever chemicals") · 2025
PFOS in Lees Summit, MO tap water
Lees Summit, MO's 2025 PFOS measurement is below the federal limit.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Maximum Sampled Result | 0.86 ng/L | None set |
Range System-wide | 0–0.86 ng/L | None set |
Reported level Water System Name | 2 ng/L | None set |
Verbatim from Lees Summit, MO's 2025 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.
People also ask
+Is there PFOS in Lees Summit, MO tap water?
Yes — Lees Summit, MO's 2025 Consumer Confidence Report lists PFOS at 2 ng/L. Lees Summit, MO's 2025 PFOS measurement is below the federal limit.
+What's the federal limit for PFOS in drinking water?
The EPA has not set an enforceable federal limit for PFOS. Utilities still report any measured levels in their annual Consumer Confidence Report.
+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.
+Where does this PFOS measurement come from?
This page reproduces the PFOS entry from the 2025 Consumer Confidence Report published by the Lees Summit, MO 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/mo/lees-summit/2025/source.