Metals · 2025
Mercury in Columbus, OH tap water
Columbus, OH's 2025 Consumer Confidence Report tested for Mercury and reported no detectable amount.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Reported level Columbus Water | Not detected mg/L | 0.002 mg/L MCL |
Verbatim from Columbus, OH's 2025 Consumer Confidence Report — source document ↗
About Mercury
A toxic metal from erosion of natural deposits and industrial runoff.
Long-term exposure above the federal limit can damage the kidneys.
How Columbus, OH compares
Nearby systems also reporting Mercury:
People also ask
+Is there Mercury in Columbus, OH tap water?
Columbus, OH's 2025 Consumer Confidence Report tested for Mercury and found no detectable amount.
+What's the federal limit for Mercury in drinking water?
The federal MCL for Mercury is 0.002 mg/L. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+What is Mercury?
A toxic metal from erosion of natural deposits and industrial runoff. Long-term exposure above the federal limit can damage the kidneys.
+Where does this Mercury measurement come from?
This page reproduces the Mercury entry from the 2025 Consumer Confidence Report published by the Columbus, OH 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/oh/columbus/2025/source.