Metals · 2024
Magnesium in Ontario Municipal Utilities Company, CA tap water
Ontario Municipal Utilities Company, CA's 2024 report shows Magnesium detected, but the EPA has not set an enforceable federal limit for it.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Highest single sample Source water | 7.9 MG/L | None set |
Average Source water | 7.375 MG/L | None set |
Verbatim from Ontario Municipal Utilities Company, CA's 2024 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 Ontario Municipal Utilities Company, CA compares
1 of the 205 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 Ontario Municipal Utilities Company, CA tap water?
Yes — Ontario Municipal Utilities Company, CA's 2024 Consumer Confidence Report lists Magnesium at 7.375 MG/L. Ontario Municipal Utilities Company, CA's 2024 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?
1 of the 205 systems on The Water Map measuring Magnesium report it at or above the federal limit. Examples include Vancouver, WA.
+Where does this Magnesium measurement come from?
This page reproduces the Magnesium entry from the 2024 Consumer Confidence Report published by the Ontario Municipal Utilities Company, CA 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/ca/ontario-municipal-utilities-company/2024/source.