Metals · 2024
Aluminum in San Mateo, CA tap water
San Mateo, CA's 2024 report shows Aluminum detected, but the EPA has not set an enforceable federal limit for it.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Range System-wide | 0–0.06 mg/L | None set |
Average System-wide | Not detected mg/L | None set |
Range SFPUC Water | 0–59 ug/L | None set |
Average SFPUC Water | Not detected ug/L | None set |
Verbatim from San Mateo, CA's 2024 Consumer Confidence Report — source document ↗
About Aluminum
A common element sometimes used as a treatment coagulant.
Regulated only as a secondary (cosmetic) standard; high levels can discolor water.
How San Mateo, CA compares
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People also ask
+Is there Aluminum in San Mateo, CA tap water?
Yes — San Mateo, CA's 2024 Consumer Confidence Report lists Aluminum at Not detected mg/L. San Mateo, CA's 2024 report shows Aluminum detected, but the EPA has not set an enforceable federal limit for it.
+What's the federal limit for Aluminum in drinking water?
The EPA has not set an enforceable federal limit for Aluminum. Utilities still report any measured levels in their annual Consumer Confidence Report.
+What is Aluminum?
A common element sometimes used as a treatment coagulant. Regulated only as a secondary (cosmetic) standard; high levels can discolor water.
+Where does this Aluminum measurement come from?
This page reproduces the Aluminum entry from the 2024 Consumer Confidence Report published by the 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/san-mateo/2024/source.