Metals · 2025
Potassium in Rialto, City of, CA tap water
Rialto, City of, CA's 2025 report shows Potassium detected, but the EPA has not set an enforceable federal limit for it.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Average Source water | 1.5583333333333333 MG/L | None set |
Highest single sample Source water | 1.9 MG/L | None set |
Verbatim from Rialto, City of, CA's 2025 Consumer Confidence Report — source document ↗
About Potassium
A naturally occurring mineral from rock and soil.
Not federally regulated for health.
How Rialto, City of, CA compares
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People also ask
+Is there Potassium in Rialto, City of, CA tap water?
Yes — Rialto, City of, CA's 2025 Consumer Confidence Report lists Potassium at 1.5583333333333333 MG/L. Rialto, City of, CA'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.
+Where does this Potassium measurement come from?
This page reproduces the Potassium entry from the 2025 Consumer Confidence Report published by the Rialto, City of, 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/rialto/2025/source.