Physical & aggregate · 2026
Hardness in Irvine Ranch Water District, CA tap water
Irvine Ranch Water District, CA's 2026 report shows Hardness detected, but the EPA has not set an enforceable federal limit for it.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Average Source water | 152.20000000000002 MG/L | None set |
Highest single sample Source water | 297 MG/L | None set |
Verbatim from Irvine Ranch Water District, CA's 2026 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 Irvine Ranch Water District, CA compares
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People also ask
+Is there Hardness in Irvine Ranch Water District, CA tap water?
Yes — Irvine Ranch Water District, CA's 2026 Consumer Confidence Report lists Hardness at 152.20000000000002 MG/L. Irvine Ranch Water District, CA's 2026 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 2026 Consumer Confidence Report published by the Irvine Ranch Water District, 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/irvine-ranch-water-district/2026/source.