Physical & aggregate · 2025
Hardness in Riverside, City of, CA tap water
Riverside, City of, CA's 2025 report shows Hardness detected, but the EPA has not set an enforceable federal limit for it.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Average Entry point | 208.68421052631578 MG/L | None set |
Average Distribution | 187.2 MG/L | None set |
Average Source water | 195.58536585365854 MG/L | None set |
Highest single sample Entry point | 300 MG/L | None set |
Highest single sample Distribution | 270 MG/L | None set |
Highest single sample Source water | 340 MG/L | None set |
Verbatim from Riverside, City of, CA's 2025 Consumer Confidence Report — source document ↗
About Hardness
A measure of dissolved calcium and magnesium minerals.
Not federally regulated for health; affects scaling, soap use, and taste.
How Riverside, City of, CA compares
Nearby systems also reporting Hardness:
People also ask
+Is there Hardness in Riverside, City of, CA tap water?
Yes — Riverside, City of, CA's 2025 Consumer Confidence Report lists Hardness at 208.68421052631578 MG/L. Riverside, City of, CA's 2025 report shows Hardness detected, but the EPA has not set an enforceable federal limit for it.
+What's the federal limit for Hardness in drinking water?
The EPA has not set an enforceable federal limit for Hardness. Utilities still report any measured levels in their annual Consumer Confidence Report.
+What is Hardness?
A measure of dissolved calcium and magnesium minerals. Not federally regulated for health; affects scaling, soap use, and taste.
+Where does this Hardness measurement come from?
This page reproduces the Hardness entry from the 2025 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/2025/source.