PFAS ("forever chemicals") · 2024
PFOS in Greensboro, NC tap water
Greensboro, NC's 2024 Consumer Confidence Report shows PFOS at or above the federal limit (4 ng/L MCL). Measured value is 4.5× the threshold.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Average System-wide | 18.1 ng/L | 4 ng/L MCL |
Minimum System-wide | 14.1 ng/L | 4 ng/L MCL |
Maximum System-wide | 21.2 ng/L | 4 ng/L MCL |
Verbatim from Greensboro, NC's 2024 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 Greensboro, NC compares
1 of the 4 NC 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 Greensboro, NC tap water?
Yes — Greensboro, NC's 2024 Consumer Confidence Report lists PFOS at 18.1 ng/L. Greensboro, NC's 2024 Consumer Confidence Report shows PFOS at or above the federal limit (4 ng/L MCL). Measured value is 4.5× 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?
1 of the 4 NC systems on The Water Map measuring PFOS report it at or above the federal limit. Examples include Fayetteville, NC.
+Where does this PFOS measurement come from?
This page reproduces the PFOS entry from the 2024 Consumer Confidence Report published by the Greensboro, NC 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/nc/greensboro/2024/source.