Inorganic chemicals
Chlorodibromoacetic acid in U.S. tap water
4 public water systems across 3 U.S. states report Chlorodibromoacetic 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 | 1.32 ug/L | 4.4× the limit |
Frequently asked
+What is Chlorodibromoacetic 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 Chlorodibromoacetic acid in drinking water?
The federal MCL for Chlorodibromoacetic acid is 0.3 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 Chlorodibromoacetic acid over the federal limit?
1 of the 4 public water systems on The Water Map report Chlorodibromoacetic acid at or above its federal limit, spanning 3 U.S. states. The full list is on this page.
+How can I check if Chlorodibromoacetic 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 Chlorodibromoacetic acid.
See Chlorodibromoacetic acid on the map
Color-coded by status across the whole country.
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