Disinfection byproducts · 2026
Chlorate in Los Angeles-city, Dept. of Water & Power, CA tap water
Los Angeles-city, Dept. of Water & Power, CA's 2026 report shows Chlorate detected, but the EPA has not set an enforceable federal limit for it.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Highest single sample Entry point | 31.5 UG/L | None set |
Highest single sample Source water | Not detected UG/L | None set |
Average Entry point | 22.307692307692307 UG/L | None set |
Verbatim from Los Angeles-city, Dept. of Water & Power, CA's 2026 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 Los Angeles-city, Dept. of Water & Power, CA compares
1 of the 50 systems measuring Chlorate on The Water Map have it at or above the federal limit:
Nearby systems also reporting Chlorate:
People also ask
+Is there Chlorate in Los Angeles-city, Dept. of Water & Power, CA tap water?
Yes — Los Angeles-city, Dept. of Water & Power, CA's 2026 Consumer Confidence Report lists Chlorate at 22.307692307692307 UG/L. Los Angeles-city, Dept. of Water & Power, CA's 2026 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 EPA has not set an enforceable federal limit for Chlorate. Utilities still report any measured levels in their annual Consumer Confidence Report.
+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.
+Which other U.S. cities have Chlorate over the federal limit?
1 of the 50 systems on The Water Map measuring Chlorate report it at or above the federal limit. Examples include Chula Vista Sweetwater, CA.
+Where does this Chlorate measurement come from?
This page reproduces the Chlorate entry from the 2026 Consumer Confidence Report published by the Los Angeles-city, Dept. of Water & Power, 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/los-angeles-city-dept-of-water-power/2026/source.