Physical & aggregate · 2023
Hardness in Cal-water Service Co.-oroville — San Jose, Ca, CA tap water
Cal-water Service Co.-oroville — San Jose, 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 Surface Water | 36 mg/L | None set |
Average Surface Water | 36 mg/L | None set |
Average Groundwater | 150 mg/L | None set |
Range Groundwater | 150 mg/L | None set |
Verbatim from Cal-water Service Co.-oroville — San Jose, 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 Cal-water Service Co.-oroville — San Jose, Ca, CA compares
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People also ask
+Is there Hardness in Cal-water Service Co.-oroville — San Jose, Ca, CA tap water?
Yes — Cal-water Service Co.-oroville — San Jose, Ca, CA's 2023 Consumer Confidence Report lists Hardness at 150 mg/L. Cal-water Service Co.-oroville — San Jose, 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 Cal-water Service Co.-oroville — San Jose, 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/cal-water-service-co-oroville-san-jose-ca/2023/source.