PFAS ("forever chemicals") · 2024
PFOS in North Charleston, SC tap water
North Charleston, SC's 2024 Consumer Confidence Report shows PFOS at or above the federal limit (0.02 ng/L NL). Measured value is 485.0× the threshold.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Reported level Oct 2023 | 5.2 ng/L | 0.02 ng/L NL |
Reported level Feb 2019 | 6.3 ng/L | 0.02 ng/L NL |
Reported level May 2019 | 7 ng/L | 0.02 ng/L NL |
Reported level Feb 2022 | 5.4 ng/L | 0.02 ng/L NL |
Reported level Nov 2021 | 6 ng/L | 0.02 ng/L NL |
Reported level Aug 2018 | 9.7 ng/L | 0.02 ng/L NL |
Reported level Dec 2018 | 6.1 ng/L | 0.02 ng/L NL |
Reported level Oct 2020 | 7.5 ng/L | 0.02 ng/L NL |
Reported level Jan 2024 | 5.3 ng/L | 0.02 ng/L NL |
Verbatim from North Charleston, SC'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 North Charleston, SC compares
5 of the 147 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 North Charleston, SC tap water?
Yes — North Charleston, SC's 2024 Consumer Confidence Report lists PFOS at 9.7 ng/L. North Charleston, SC's 2024 Consumer Confidence Report shows PFOS at or above the federal limit (0.02 ng/L NL). Measured value is 485.0× the threshold.
+What's the federal limit for PFOS in drinking water?
The federal NL for PFOS is 0.02 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 147 systems on The Water Map measuring PFOS report it at or above the federal limit. Examples include Charleston, SC, City of Hialeah, FL, City of Homestead, FL.
+Where does this PFOS measurement come from?
This page reproduces the PFOS entry from the 2024 Consumer Confidence Report published by the North Charleston, SC 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/sc/north-charleston/2024/source.