Physical & aggregate · 2022
Hardness in Commerce-city, Water Dept. — San Jose, Ca, CA tap water
Commerce-city, Water Dept. — San Jose, Ca, CA's 2022 report shows Hardness detected, but the EPA has not set an enforceable federal limit for it.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Average Central Basin MWD | 124 mg/L | None set |
Average Groundwater | 175 mg/L | None set |
Range Groundwater | 170–180 mg/L | None set |
Range Central Basin MWD | 81–153 mg/L | None set |
Verbatim from Commerce-city, Water Dept. — San Jose, Ca, CA's 2022 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 Commerce-city, Water Dept. — San Jose, Ca, CA compares
Nearby systems also reporting Hardness:
People also ask
+Is there Hardness in Commerce-city, Water Dept. — San Jose, Ca, CA tap water?
Yes — Commerce-city, Water Dept. — San Jose, Ca, CA's 2022 Consumer Confidence Report lists Hardness at 175 mg/L. Commerce-city, Water Dept. — San Jose, Ca, CA's 2022 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 2022 Consumer Confidence Report published by the Commerce-city, Water Dept. — 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/commerce-city-water-dept-san-jose-ca/2022/source.