Physical & aggregate · 2026
Hardness in Los Angeles-city, Dept. of Water & Power, CA tap water
Los Angeles-city, Dept. of Water & Power, 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 | 352.7409090909091 MG/L | None set |
Highest single sample Source water | 566 MG/L | None set |
Highest single sample Entry point | 558 MG/L | None set |
Average Entry point | 466.59473684210525 MG/L | None set |
Verbatim from Los Angeles-city, Dept. of Water & Power, 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 Los Angeles-city, Dept. of Water & Power, CA compares
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People also ask
+Is there Hardness in Los Angeles-city, Dept. of Water & Power, CA tap water?
Yes — Los Angeles-city, Dept. of Water & Power, CA's 2026 Consumer Confidence Report lists Hardness at 466.59473684210525 MG/L. Los Angeles-city, Dept. of Water & Power, 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 Los Angeles-city, Dept. of Water & Power, 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/los-angeles-city-dept-of-water-power/2026/source.