Bromochloroacetic acid is a disinfection byproduct formed when chlorine reacts with organic matter in water. It's found in chlorinated water and may increase cancer risk.

Bromochloroacetic acid is one of several haloacetic acids that form as unintended byproducts during water chlorination. It occurs when chlorine, used to disinfect water, reacts with naturally present organic matter and bromide. This compound is commonly found in treated drinking water systems that use chlorine-based disinfectants. Water utilities regularly monitor for bromochloroacetic acid and other disinfection byproducts to ensure levels remain within regulatory limits set by environmental agencies.