[1] According to the CDC, levels normal in drinking water are not known to cause health problems, but it has been classified by the US EPA as a probable human carcinogen.

Bromodichloromethane has formerly been used as a flame retardant, and a solvent for fats and waxes and because of its high density for mineral separation.

[1] A small number of studies have examined the effects of low levels of bromodichloromethane on people, but most were also exposed to other chemicals, so it may not be the only cause of reported health problems.

[1] Studies in animals with much higher levels of the chemical than what humans are normally exposed to have resulted in health problems.

[5] This data largely comes from studies reviewed or conducted by the California Office of Environmental Health Hazard Assessment.