Disinfection byproducts
Dibromochloromethane in U.S. tap water
60 public water systems across 12 U.S. states report Dibromochloromethane in their annual Consumer Confidence Report. None currently sit at or above the federal limit.
What it is
A trihalomethane disinfection byproduct.
Why it's regulated
Part of regulated total trihalomethanes; long-term exposure is linked to nervous-system, liver, and kidney effects.
Within the federal limit (4)
| Water system | Measured |
|---|---|
| Glen Meadow Retirement Community, MD 2024 annual report | Not detected ug/L |
| La Canada Irrigation Dist. — La Canada, Ca, CA 2022 annual report | Not detected |
| La Canada Irrigation Dist. — La Canada, Ca, CA 2023 annual report | Not detected |
| La Canada Irrigation Dist. — La Canada, Ca, CA 2020 annual report | Not detected |
Frequently asked
+What is Dibromochloromethane?
A trihalomethane disinfection byproduct. Part of regulated total trihalomethanes; long-term exposure is linked to nervous-system, liver, and kidney effects.
+What is the federal limit for Dibromochloromethane in drinking water?
The federal Public health goal for Dibromochloromethane is 0.1 . The EPA enforces this against the regulated reporting statistic (typically a running annual average or 90th percentile), not a single-sample spike.
+How many U.S. water systems have Dibromochloromethane over the federal limit?
Zero of the 60 public water systems in The Water Map dataset currently report Dibromochloromethane at or above its federal limit.
+How can I check if Dibromochloromethane is in my city's tap water?
Search your city on The Water Map (https://www.thewatermap.com/) or browse the list on this page. Every U.S. public water utility is required to publish an annual Consumer Confidence Report that lists every contaminant it measured, including Dibromochloromethane.