Disinfection byproducts · 2023
Chlorate in San Francisco SFPUC, CA tap water
San Francisco SFPUC, CA's 2023 report shows Chlorate detected, but the EPA has not set an enforceable federal limit for it.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Range System-wide | 24–597 ug/L | 800 ug/L NL |
Average System-wide | 144 ug/L | 800 ug/L NL |
Verbatim from San Francisco SFPUC, CA's 2023 Consumer Confidence Report — source document ↗
About Chlorate
A byproduct that can form during disinfection, especially when hypochlorite solutions degrade.
Has no enforceable federal limit but is on the EPA contaminant candidate list; high levels can affect the thyroid.
How San Francisco SFPUC, CA compares
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People also ask
+Is there Chlorate in San Francisco SFPUC, CA tap water?
Yes — San Francisco SFPUC, CA's 2023 Consumer Confidence Report lists Chlorate at 144 ug/L. San Francisco SFPUC, CA's 2023 report shows Chlorate detected, but the EPA has not set an enforceable federal limit for it.
+What's the federal limit for Chlorate in drinking water?
The federal NL for Chlorate is 800 ug/L. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+What is Chlorate?
A byproduct that can form during disinfection, especially when hypochlorite solutions degrade. Has no enforceable federal limit but is on the EPA contaminant candidate list; high levels can affect the thyroid.
+Where does this Chlorate measurement come from?
This page reproduces the Chlorate entry from the 2023 Consumer Confidence Report published by the San Francisco SFPUC, 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-francisco-sfpuc/2023/source.