Metals · 2025
Barium in Columbus, OH tap water
Columbus, OH's 2025 Consumer Confidence Report shows Barium at or above the federal limit (2 MCL). Measured value is 1012.5× the threshold.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Reported level Columbus Water | 0.01 | 2 MCL |
Reported level Hap Cremean Water Plant | 0.02 mg/L | 2 mg/L MCL |
Reported level Dublin Road Water Plant | Not detected mg/L | 2 mg/L MCL |
Reported level When we checked | 2025 mg/L | 2 mg/L MCL |
Verbatim from Columbus, OH's 2025 Consumer Confidence Report — source document ↗
About Barium
A metal from erosion of natural deposits and industrial discharge.
Long-term exposure above the federal limit can raise blood pressure.
How Columbus, OH compares
5 of the 286 systems measuring Barium on The Water Map have it at or above the federal limit:
Nearby systems also reporting Barium:
People also ask
+Is there Barium in Columbus, OH tap water?
Yes — Columbus, OH's 2025 Consumer Confidence Report lists Barium at 2025 mg/L. Columbus, OH's 2025 Consumer Confidence Report shows Barium at or above the federal limit (2 MCL). Measured value is 1012.5× the threshold.
+What's the federal limit for Barium in drinking water?
The federal MCL for Barium is 2 . The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+What is Barium?
A metal from erosion of natural deposits and industrial discharge. Long-term exposure above the federal limit can raise blood pressure.
+Which other U.S. cities have Barium over the federal limit?
5 of the 286 systems on The Water Map measuring Barium report it at or above the federal limit. Examples include Hollywood, FL, Mcallen, TX, City of Baltimore, MD.
+Where does this Barium measurement come from?
This page reproduces the Barium 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.