Physical & aggregate · 2023
Hardness in City of Santa Clara, CA tap water
City of Santa Clara, CA's 2023 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 | 270 MG/L | None set |
Highest single sample Source water | 300 MG/L | None set |
Verbatim from City of Santa Clara, CA's 2023 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 City of Santa Clara, CA compares
Nearby systems also reporting Hardness:
People also ask
+Is there Hardness in City of Santa Clara, CA tap water?
Yes — City of Santa Clara, CA's 2023 Consumer Confidence Report lists Hardness at 270 MG/L. City of Santa Clara, CA's 2023 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 2023 Consumer Confidence Report published by the City of Santa Clara, 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/santa-clara/2023/source.