Metals · 2025
Magnesium in Columbus, OH tap water
Columbus, OH's 2025 report shows Magnesium detected, but the EPA has not set an enforceable federal limit for it.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Reported level Columbus Water | 8 | None set |
Verbatim from Columbus, OH's 2025 Consumer Confidence Report — source document ↗
About Magnesium
A naturally occurring mineral that contributes to water hardness.
Not federally regulated for health; affects scaling and taste.
How Columbus, OH compares
3 of the 111 systems measuring Magnesium on The Water Map have it at or above the federal limit:
Nearby systems also reporting Magnesium:
People also ask
+Is there Magnesium in Columbus, OH tap water?
Yes — Columbus, OH's 2025 Consumer Confidence Report lists Magnesium at 8. Columbus, OH's 2025 report shows Magnesium detected, but the EPA has not set an enforceable federal limit for it.
+What's the federal limit for Magnesium in drinking water?
The EPA has not set an enforceable federal limit for Magnesium. Utilities still report any measured levels in their annual Consumer Confidence Report.
+What is Magnesium?
A naturally occurring mineral that contributes to water hardness. Not federally regulated for health; affects scaling and taste.
+Which other U.S. cities have Magnesium over the federal limit?
3 of the 111 systems on The Water Map measuring Magnesium report it at or above the federal limit. Examples include Pomona, CA, Burbank, CA, Vancouver, WA.
+Where does this Magnesium measurement come from?
This page reproduces the Magnesium 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.