Disinfection byproducts · 2024
Perchlorate in Charleston, SC tap water
Charleston, SC's 2024 Perchlorate measurement is below the federal limit of 25 ug/L (NL).
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Reported level Feb 2022 | 0.44 ug/L | 25 ug/L NL |
Reported level Jan 2024 | 0.17 ug/L | 25 ug/L NL |
Reported level Nov 2021 | 0.09 ug/L | 25 ug/L NL |
Reported level Oct 2023 | 0.14 ug/L | 25 ug/L NL |
Reported level Feb 2019 | 0.13 ug/L | 25 ug/L NL |
Reported level May 2019 | 0.12 ug/L | 25 ug/L NL |
Verbatim from Charleston, SC's 2024 Consumer Confidence Report — source document ↗
About Perchlorate
A chemical used in rocket fuel and fireworks that can also form during disinfection.
Can interfere with thyroid hormone production; has no national enforceable limit but is regulated in some states.
How Charleston, SC compares
Nearby systems also reporting Perchlorate:
People also ask
+Is there Perchlorate in Charleston, SC tap water?
Yes — Charleston, SC's 2024 Consumer Confidence Report lists Perchlorate at 0.44 ug/L. Charleston, SC's 2024 Perchlorate measurement is below the federal limit of 25 ug/L (NL).
+What's the federal limit for Perchlorate in drinking water?
The federal NL for Perchlorate is 25 ug/L. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+What is Perchlorate?
A chemical used in rocket fuel and fireworks that can also form during disinfection. Can interfere with thyroid hormone production; has no national enforceable limit but is regulated in some states.
+Where does this Perchlorate measurement come from?
This page reproduces the Perchlorate entry from the 2024 Consumer Confidence Report published by the 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/charleston/2024/source.