Contaminants

Limits

Sources

Potential Health Effect

Residual Chlorine

4 mg/L

Disinfectant added to control pathogens

Nervous System Damage, Anemia, Methemoglobinemia

Trihalomethane: chloroform bromodichloromethane dibromochloromethane bromoform

80 mg/L

Byproduct of water chlorination

Cancer, Liver Disease, Kidney Failure, Nervous System Damage, Bladder Cancer, Colorectal Cancer, Adverse development, and reproductive effects during pregnancy