Bromochloroacetonitrile is a disinfection byproduct formed when chlorine reacts with organic matter in water. It's found in chlorinated drinking water supplies.

Bromochloroacetonitrile belongs to a group of compounds called haloacetonitriles. It forms when chlorine, used to disinfect water, reacts with naturally occurring organic matter. Water utilities typically measure it in parts per billion (ppb). While its presence is a concern, water treatment plants employ various techniques to minimize its formation, such as optimizing chlorination processes and removing organic precursors. Ongoing research aims to better understand its potential health impacts and develop more effective removal strategies.