Metals · 2026
Silica in San Diego, City of, CA tap water
San Diego, City of, CA's 2026 report shows Silica detected, but the EPA has not set an enforceable federal limit for it.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Average Entry point | 11.017777777777777 MG/L | None set |
Highest single sample Other | 14.1 MG/L | None set |
Highest single sample Source water | 21.6 MG/L | None set |
Average Other | 11.102222222222222 MG/L | None set |
Average Source water | 13.0475 MG/L | None set |
Highest single sample Entry point | 14.6 MG/L | None set |
Verbatim from San Diego, City of, CA's 2026 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 2026 Consumer Confidence Report lists Silica at 13.0475 MG/L. San Diego, City of, CA's 2026 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 2026 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/2026/source.