Dibromochloromethane is a disinfection byproduct formed when chlorine reacts with organic matter in water. It's found in chlorinated water and is a potential carcinogen.

Dibromochloromethane is one of several trihalomethanes (THMs) that form when chlorine, used to disinfect water, reacts with naturally occurring organic matter. It's commonly found in treated drinking water and is measured in parts per billion (ppb). The EPA regulates total THMs, including dibromochloromethane, to minimize potential health risks. Water utilities monitor and manage THM levels through various treatment techniques to ensure safe drinking water while maintaining effective disinfection.