Disinfection byproducts
Bromodichloroacetic acid in U.S. tap water
22 public water systems across 6 U.S. states report Bromodichloroacetic acid in their annual Consumer Confidence Report. 1 sit at or above the federal limit.
What it is
A brominated haloacetic acid disinfection byproduct.
Why it's regulated
Part of the broader HAA9 group; monitored but without its own enforceable federal limit.
At or above the federal limit (1)
| Water system | Measured | vs. limit |
|---|---|---|
| Kansas City, KS 2024 annual report | 4.86 ug/L | 9.7× the limit |
Frequently asked
+What is Bromodichloroacetic acid?
A brominated haloacetic acid disinfection byproduct. Part of the broader HAA9 group; monitored but without its own enforceable federal limit.
+What is the federal limit for Bromodichloroacetic acid in drinking water?
The federal MCL for Bromodichloroacetic acid is 0.5 ug/L. 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 Bromodichloroacetic acid over the federal limit?
1 of the 22 public water systems on The Water Map report Bromodichloroacetic acid at or above its federal limit, spanning 6 U.S. states. The full list is on this page.
+How can I check if Bromodichloroacetic acid 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 Bromodichloroacetic acid.
See Bromodichloroacetic acid on the map
Color-coded by status across the whole country.
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