Monochloroacetic acid is a chlorinated compound formed when chlorine disinfectants react with organic matter in water. It's regulated due to potential liver and kidney effects.

Monochloroacetic acid is a disinfection byproduct that forms when chlorine reacts with natural organic matter in water. It's one of five haloacetic acids (HAAs) regulated by the EPA. This compound can continue to form in distribution systems as chlorine interacts with organic materials. Water treatment plants can reduce its formation by improving organic matter removal before disinfection or by using alternative disinfection methods. Regular monitoring of HAA levels helps ensure water safety.