Inorganic chemicals · 2024
Chloride in San Mateo, CA tap water
San Mateo, CA's 2024 Chloride measurement is below the federal limit of 500 mg/L (MCL).
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Average SFPUC Water | 9.3 mg/L | 500 mg/L MCL |
Range SFPUC Water | 0–9.9 mg/L | 500 mg/L MCL |
Verbatim from San Mateo, CA's 2024 Consumer Confidence Report — source document ↗
About Chloride
A naturally occurring salt compound.
Regulated only as a secondary (cosmetic) standard; high levels cause a salty taste and can corrode pipes.
How San Mateo, CA compares
1 of the 143 systems measuring Chloride on The Water Map have it at or above the federal limit:
Nearby systems also reporting Chloride:
People also ask
+Is there Chloride in San Mateo, CA tap water?
Yes — San Mateo, CA's 2024 Consumer Confidence Report lists Chloride at 9.3 mg/L. San Mateo, CA's 2024 Chloride measurement is below the federal limit of 500 mg/L (MCL).
+What's the federal limit for Chloride in drinking water?
The federal MCL for Chloride is 500 mg/L. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+What is Chloride?
A naturally occurring salt compound. Regulated only as a secondary (cosmetic) standard; high levels cause a salty taste and can corrode pipes.
+Which other U.S. cities have Chloride over the federal limit?
1 of the 143 systems on The Water Map measuring Chloride report it at or above the federal limit. Examples include Lakewood, CO.
+Where does this Chloride measurement come from?
This page reproduces the Chloride 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.