Metals · 2025
Silica in San Diego, City of, CA tap water
San Diego, City of, CA's 2025 report shows Silica detected, but the EPA has not set an enforceable federal limit for it.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Average Source water | 10.874062499999999 MG/L | None set |
Highest single sample Entry point | 13.2 MG/L | None set |
Highest single sample Source water | 22.2 MG/L | None set |
Highest single sample Other | 13.6 MG/L | None set |
Average Other | 8.786111111111111 MG/L | None set |
Average Entry point | 8.761666666666667 MG/L | None set |
Verbatim from San Diego, City of, CA's 2025 Consumer Confidence Report — source document ↗
About Silica
A naturally occurring compound from sand and rock.
Not federally regulated for health; relevant mainly for industrial water use.
How San Diego, City of, CA compares
Nearby systems also reporting Silica:
People also ask
+Is there Silica in San Diego, City of, CA tap water?
Yes — San Diego, City of, CA's 2025 Consumer Confidence Report lists Silica at 10.874062499999999 MG/L. San Diego, City of, CA's 2025 report shows Silica detected, but the EPA has not set an enforceable federal limit for it.
+What's the federal limit for Silica in drinking water?
The EPA has not set an enforceable federal limit for Silica. Utilities still report any measured levels in their annual Consumer Confidence Report.
+What is Silica?
A naturally occurring compound from sand and rock. Not federally regulated for health; relevant mainly for industrial water use.
+Where does this Silica measurement come from?
This page reproduces the Silica 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.