Know Your Environment. Protect Your Health.

Dibromochloromethane

Askov

Dibromochloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Dibromochloromethane and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

 

31

Samples

0

Samples exceeding legal limit (MCL)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND80ND
2020ND80ND
20210.138 ppb82ND - 0.600 ppb
2022ND30ND
2023ND10ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.1 ppb

The EWG Health Guideline of 0.1 ppb for dibromochloromethane was based on the California Office of Environmental Health Hazard Assessment's public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer and harm to fetal growth and development.

ppb = parts per billion

All test results

Date Lab ID Result
2018-07-2318G1472-01ND
2018-10-1618J0930-01ND
2018-10-1618J0930-02ND
2019-01-1619A0659-01ND
2019-01-1619A0659-02ND
2019-05-1619E1336-01ND
2019-05-1619E1336-02ND
2019-07-2219G1586-01ND
2019-07-2219G1586-02ND
2019-10-2919J1666-01ND
2019-10-2919J1666-02ND
2020-01-1520A0669-01ND
2020-01-1520A0669-02ND
2020-04-1420D0457-01ND
2020-04-1420D0457-02ND
2020-07-1420G0933-01ND
2020-07-1420G0933-02ND
2020-10-2020J1066-01ND
2020-10-2020J1066-02ND
2021-01-1221A0348-01ND
2021-01-1221A0348-02ND
2021-04-1321D0735-01ND
2021-04-1321D0735-02ND
2021-08-1021H0864-01ND
2021-08-1021H0864-02ND
2021-10-1921J0972-010.600 ppb
2021-10-1921J0972-020.500 ppb
2022-01-2522A0936-01ND
2022-01-2522A0936-02ND
2022-07-1222G0621-01ND
2023-07-1823G1115-01ND