Physical & aggregate · 2023
Hardness in City of Mountain View — Mountain View, Ca, CA tap water
City of Mountain View — Mountain View, Ca, 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 |
|---|---|---|
Range SFPUC | 8.4–106 mg/L | None set |
Average SFPUC | 57 mg/L | None set |
Range CMV Wells | 220–339 mg/L | None set |
Range Valley Water | 93–133 mg/L | None set |
Average Valley Water | 111 mg/L | None set |
Verbatim from City of Mountain View — Mountain View, Ca, 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 Mountain View — Mountain View, Ca, CA compares
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People also ask
+Is there Hardness in City of Mountain View — Mountain View, Ca, CA tap water?
Yes — City of Mountain View — Mountain View, Ca, CA's 2023 Consumer Confidence Report lists Hardness at 111 mg/L. City of Mountain View — Mountain View, Ca, 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 Mountain View — Mountain View, Ca, 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/mountain-view-mountain-view-ca/2023/source.