Physical & aggregate · 2023
Hardness in Cwsc Oak Hills — San Jose, Ca, CA tap water
Cwsc Oak Hills — 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 |
|---|---|---|
Average Groundwater | 250 mg/L | None set |
Range Groundwater | 190–310 mg/L | None set |
Verbatim from Cwsc Oak Hills — 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 Cwsc Oak Hills — San Jose, Ca, CA compares
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People also ask
+Is there Hardness in Cwsc Oak Hills — San Jose, Ca, CA tap water?
Yes — Cwsc Oak Hills — San Jose, Ca, CA's 2023 Consumer Confidence Report lists Hardness at 250 mg/L. Cwsc Oak Hills — 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 Cwsc Oak Hills — 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/cwsc-oak-hills-san-jose-ca/2023/source.