Metals · 2025
Potassium in Columbus, OH tap water
Columbus, OH's 2025 report shows Potassium detected, but the EPA has not set an enforceable federal limit for it.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Reported level Columbus Water | 4.2 | None set |
Verbatim from Columbus, OH's 2025 Consumer Confidence Report — source document ↗
About Potassium
A naturally occurring mineral from rock and soil.
Not federally regulated for health.
How Columbus, OH compares
3 of the 82 systems measuring Potassium on The Water Map have it at or above the federal limit:
Nearby systems also reporting Potassium:
People also ask
+Is there Potassium in Columbus, OH tap water?
Yes — Columbus, OH's 2025 Consumer Confidence Report lists Potassium at 4.2. Columbus, OH's 2025 report shows Potassium detected, but the EPA has not set an enforceable federal limit for it.
+What's the federal limit for Potassium in drinking water?
The EPA has not set an enforceable federal limit for Potassium. Utilities still report any measured levels in their annual Consumer Confidence Report.
+What is Potassium?
A naturally occurring mineral from rock and soil. Not federally regulated for health.
+Which other U.S. cities have Potassium over the federal limit?
3 of the 82 systems on The Water Map measuring Potassium report it at or above the federal limit. Examples include Pomona, CA, Burbank, CA, Vancouver, WA.
+Where does this Potassium measurement come from?
This page reproduces the Potassium 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.