PFAS ("forever chemicals") · 2024
PFOS in Columbia, SC tap water
Columbia, SC's 2024 Consumer Confidence Report shows PFOS at or above the federal limit. Measured value is 1.7× the threshold.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Range System-wide | 6.2–7.1000000000000005 ng/L | None set |
Average System-wide | 6.7 ng/L | None set |
Range System-wide | 6.6–7.2 ng/L | None set |
Average System-wide | 6.8999999999999995 ng/L | None set |
Verbatim from Columbia, 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 Columbia, SC compares
2 of the 3 SC 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 Columbia, SC tap water?
Yes — Columbia, SC's 2024 Consumer Confidence Report lists PFOS at 6.8999999999999995 ng/L. Columbia, SC's 2024 Consumer Confidence Report shows PFOS at or above the federal limit. Measured value is 1.7× the threshold.
+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.
+Which other U.S. cities have PFOS over the federal limit?
2 of the 3 SC systems on The Water Map measuring PFOS report it at or above the federal limit. Examples include Charleston, SC, North Charleston, SC.
+Where does this PFOS measurement come from?
This page reproduces the PFOS entry from the 2024 Consumer Confidence Report published by the Columbia, 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/columbia/2024/source.