Metals · 2025
Thallium in Columbus, OH tap water
Columbus, OH's 2025 Consumer Confidence Report tested for Thallium 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 ↗
How Columbus, OH compares
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People also ask
+Is there Thallium in Columbus, OH tap water?
Columbus, OH's 2025 Consumer Confidence Report tested for Thallium and found no detectable amount.
+What's the federal limit for Thallium in drinking water?
The federal MCL for Thallium 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.
+Where does this Thallium measurement come from?
This page reproduces the Thallium 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.