Metals · 2025
Magnesium in City of Stockton, CA tap water
City of Stockton, CA's 2025 report shows Magnesium detected, but the EPA has not set an enforceable federal limit for it.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Average Source water | 9.342857142857143 MG/L | None set |
Highest single sample Source water | 29 MG/L | None set |
Average Entry point | 5.733333333333333 MG/L | None set |
Highest single sample Entry point | 8.8 MG/L | None set |
Verbatim from City of Stockton, CA'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 City of Stockton, CA compares
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People also ask
+Is there Magnesium in City of Stockton, CA tap water?
Yes — City of Stockton, CA's 2025 Consumer Confidence Report lists Magnesium at 9.342857142857143 MG/L. City of Stockton, CA'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.
+Where does this Magnesium measurement come from?
This page reproduces the Magnesium entry from the 2025 Consumer Confidence Report published by the City of Stockton, 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/stockton/2025/source.