Bromodichloromethane
Category: disinfection byproduct
EPA MCL
Not regulated
Status
EPA Regulated
NSF Standard
NSF/ANSI 53
Health Effects
Classified as a probable human carcinogen (Group B2) by EPA with an MCLG of zero. Associated with liver and kidney damage. Linked to increased cancer risk in long-term exposure studies.
Where It Comes From
Disinfection byproduct formed when chlorine reacts with bromide and organic matter in source water. One of the four trihalomethanes regulated under the TTHM standard.
Where It's Commonly Found
Chlorinated water systems, especially those with source water containing both natural organic matter and bromide ions (common in coastal and estuarine areas).
No individual MCL - regulated as part of TTHMs (0.080 mg/L for total). MCLG is zero (carcinogen). Found in most chlorinated public water systems.
How to Remove It
Effective Technologies
- activated carbon
- carbon block
- reverse osmosis
Does NOT Remove It
- UV
- ion exchange
- water softener
- mechanical filtration
Official Sources
Related Contaminants
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