1,2-Dichloroethane is an industrial chemical used to make PVC. It enters water from factory discharge and leaching plastic pipes. It's classified as a probable carcinogen.

1,2-Dichloroethane is a synthetic chemical widely used in industry, not only for PVC production but also as a solvent and in manufacturing other chemicals. It's typically measured in parts per billion in water. Besides factory discharge and plastic pipes, it can enter water through improper disposal of industrial waste and accidental spills. While classified as a probable carcinogen, specific health effects are still being studied. The EPA regulates its presence in drinking water due to potential risks.