Physical & aggregate · 2023
Hardness in Los Angeles LADWP, CA tap water
Los Angeles LADWP, 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 Southern Combined Wells | 142 mg/L | None set |
Average MWD Jensen Plant | 148 mg/L | None set |
Range MWD Weymouth Plant | 241–303 mg/L | None set |
Range MWD Diemer Plant | 235–305 mg/L | None set |
Range Los Angeles Aqueduct Filtration Plant | 109–113 mg/L | None set |
Range MWD Jensen Plant | 143–153 mg/L | None set |
Average Los Angeles Aqueduct Filtration Plant | 112 mg/L | None set |
Average MWD Diemer Plant | 270 mg/L | None set |
Range Northern Combined Wells | 106–174 mg/L | None set |
Average MWD Weymouth Plant | 272 mg/L | None set |
Average Northern Combined Wells | 122 mg/L | None set |
Range Southern Combined Wells | 112–195 mg/L | None set |
Verbatim from Los Angeles LADWP, 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 Los Angeles LADWP, CA compares
4 of the 124 systems measuring Hardness on The Water Map have it at or above the federal limit:
Nearby systems also reporting Hardness:
People also ask
+Is there Hardness in Los Angeles LADWP, CA tap water?
Yes — Los Angeles LADWP, CA's 2023 Consumer Confidence Report lists Hardness at 272 mg/L. Los Angeles LADWP, 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.
+Which other U.S. cities have Hardness over the federal limit?
4 of the 124 systems on The Water Map measuring Hardness report it at or above the federal limit. Examples include Pomona, CA, Burbank, CA, San Diego, CA.
+Where does this Hardness measurement come from?
This page reproduces the Hardness entry from the 2023 Consumer Confidence Report published by the Los Angeles LADWP, 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/los-angeles-ladwp/2023/source.