Other · 2026
Tcaa in California Water Service - San Mateo, CA tap water
California Water Service - San Mateo, CA's 2026 report shows Tcaa detected, but the EPA has not set an enforceable federal limit for it.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Highest single sample Distribution | 9.3 UG/L | None set |
Average Distribution | 6.225 UG/L | None set |
Verbatim from California Water Service - San Mateo, CA's 2026 Consumer Confidence Report — source document ↗
How California Water Service - San Mateo, CA compares
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People also ask
+Is there Tcaa in California Water Service - San Mateo, CA tap water?
Yes — California Water Service - San Mateo, CA's 2026 Consumer Confidence Report lists Tcaa at 6.225 UG/L. California Water Service - San Mateo, CA's 2026 report shows Tcaa detected, but the EPA has not set an enforceable federal limit for it.
+What's the federal limit for Tcaa in drinking water?
The EPA has not set an enforceable federal limit for Tcaa. Utilities still report any measured levels in their annual Consumer Confidence Report.
+Where does this Tcaa measurement come from?
This page reproduces the Tcaa entry from the 2026 Consumer Confidence Report published by the California Water Service - San Mateo, 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/california-water-service-san-mateo/2026/source.