Physical & aggregate · 2024
Hardness in Pomona, CA tap water
Pomona, CA's 2024 report shows Hardness detected, but the EPA has not set an enforceable federal limit for it.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Range Pomona Groundwater | 150–310 mg/L | None set |
Range Pomona Effluent | 160–170 mg/L | None set |
Reported level Weymouth Effluent | 241–303 mg/L | None set |
Reported level Miramar Effluent | 99 mg/L | None set |
Reported level Miramar Groundwater Well #1 | 180 mg/L | None set |
Reported level Miramar Groundwater Well #2 | 190 mg/L | None set |
Reported level Miramar Groundwater Grand Well | 20 mg/L | None set |
Verbatim from Pomona, CA's 2024 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 Pomona, CA compares
Nearby systems also reporting Hardness:
People also ask
+Is there Hardness in Pomona, CA tap water?
Yes — Pomona, CA's 2024 Consumer Confidence Report lists Hardness at 150–310 mg/L. Pomona, CA's 2024 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 2024 Consumer Confidence Report published by the Pomona, 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/pomona/2024/source.