Metals · 2026
Potassium in Riverside, City of, CA tap water
Riverside, City of, CA's 2026 report shows Potassium detected, but the EPA has not set an enforceable federal limit for it.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Highest single sample Distribution | 3.6 MG/L | None set |
Highest single sample Entry point | 3.6 MG/L | None set |
Average Distribution | 3.4799999999999995 MG/L | None set |
Average Entry point | 3 MG/L | None set |
Average Source water | 3.5749999999999997 MG/L | None set |
Highest single sample Source water | 5.3 MG/L | None set |
Verbatim from Riverside, City of, CA's 2026 Consumer Confidence Report — source document ↗
About Potassium
A naturally occurring mineral from rock and soil.
Not federally regulated for health.
How Riverside, City of, CA compares
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People also ask
+Is there Potassium in Riverside, City of, CA tap water?
Yes — Riverside, City of, CA's 2026 Consumer Confidence Report lists Potassium at 3.5749999999999997 MG/L. Riverside, City of, CA's 2026 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 2026 Consumer Confidence Report published by the Riverside, 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/riverside/2026/source.