1,1,2,2-Tetrachloroethane is an industrial solvent that can enter water from factory discharges. It's toxic to the liver and kidneys and may cause cancer.

1,1,2,2-Tetrachloroethane is a synthetic chemical primarily used as an industrial solvent and in the production of other chemicals. It can enter drinking water through improper disposal or leaks from manufacturing facilities. This colorless liquid evaporates easily and has a sweet odor. The EPA classifies it as a probable human carcinogen based on animal studies. Detection in water typically involves gas chromatography. While no longer widely used in the U.S., its historical applications and persistence in the environment make it a concern for water quality monitoring.