Disinfection byproducts · 2025
Dibromochloromethane in Contra Costa Water District, CA tap water
Contra Costa Water District, CA's 2025 report shows Dibromochloromethane 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 | 3.9189999999999996 UG/L | None set |
Average Entry point | 4 UG/L | None set |
Highest single sample Entry point | 4.7 UG/L | None set |
Verbatim from Contra Costa Water District, CA's 2025 Consumer Confidence Report — source document ↗
About Dibromochloromethane
A trihalomethane disinfection byproduct.
Part of regulated total trihalomethanes; long-term exposure is linked to nervous-system, liver, and kidney effects.
How Contra Costa Water District, CA compares
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People also ask
+Is there Dibromochloromethane in Contra Costa Water District, CA tap water?
Yes — Contra Costa Water District, CA's 2025 Consumer Confidence Report lists Dibromochloromethane at 4 UG/L. Contra Costa Water District, CA's 2025 report shows Dibromochloromethane detected, but the EPA has not set an enforceable federal limit for it.
+What's the federal limit for Dibromochloromethane in drinking water?
The EPA has not set an enforceable federal limit for Dibromochloromethane. Utilities still report any measured levels in their annual Consumer Confidence Report.
+What is Dibromochloromethane?
A trihalomethane disinfection byproduct. Part of regulated total trihalomethanes; long-term exposure is linked to nervous-system, liver, and kidney effects.
+Where does this Dibromochloromethane measurement come from?
This page reproduces the Dibromochloromethane entry from the 2025 Consumer Confidence Report published by the Contra Costa Water District, 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/contra-costa-water-district/2025/source.