Metals · 2025
Calcium in San Diego, City of, CA tap water
San Diego, City of, CA's 2025 report shows Calcium detected, but the EPA has not set an enforceable federal limit for it.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Highest single sample Source water | 64.9 MG/L | None set |
Average Entry point | 28.655714285714286 MG/L | None set |
Highest single sample Entry point | 71.8 MG/L | None set |
Average Other | 28.23888888888889 MG/L | None set |
Highest single sample Other | 71.4 MG/L | None set |
Average Source water | 20.587878787878786 MG/L | None set |
Verbatim from San Diego, City of, CA's 2025 Consumer Confidence Report — source document ↗
About Calcium
A naturally occurring mineral that contributes to water hardness.
Not federally regulated for health; affects scaling and taste.
How San Diego, City of, CA compares
Nearby systems also reporting Calcium:
People also ask
+Is there Calcium in San Diego, City of, CA tap water?
Yes — San Diego, City of, CA's 2025 Consumer Confidence Report lists Calcium at 28.655714285714286 MG/L. San Diego, City of, CA's 2025 report shows Calcium detected, but the EPA has not set an enforceable federal limit for it.
+What's the federal limit for Calcium in drinking water?
The EPA has not set an enforceable federal limit for Calcium. Utilities still report any measured levels in their annual Consumer Confidence Report.
+What is Calcium?
A naturally occurring mineral that contributes to water hardness. Not federally regulated for health; affects scaling and taste.
+Where does this Calcium measurement come from?
This page reproduces the Calcium entry from the 2025 Consumer Confidence Report published by the San Diego, City of, 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/san-diego/2025/source.