Metals · 2026
Silica in Irvine Ranch Water District, CA tap water
Irvine Ranch Water District, 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 |
|---|---|---|
Highest single sample Source water | 18.8 MG/L | None set |
Average Source water | 18.75 MG/L | None set |
Verbatim from Irvine Ranch Water District, 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 Irvine Ranch Water District, CA compares
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People also ask
+Is there Silica in Irvine Ranch Water District, CA tap water?
Yes — Irvine Ranch Water District, CA's 2026 Consumer Confidence Report lists Silica at 18.75 MG/L. Irvine Ranch Water District, 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 Irvine Ranch Water District, 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/irvine-ranch-water-district/2026/source.