Know Your Environment. Protect Your Health.

Dibromochloromethane

Duvall City Of

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.

 

40

Samples

0

Samples exceeding legal limit (MCL)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND80ND
2019ND80ND
2020N/A00N/A
2021ND80ND
2022ND80ND
20230.186 ppb82ND - 0.769 ppb

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
2018-02-09ND
2018-02-09ND
2018-05-11ND
2018-05-11ND
2018-08-10ND
2018-08-10ND
2018-11-09ND
2018-11-09ND
2019-02-22ND
2019-02-22ND
2019-05-10ND
2019-05-10ND
2019-08-09ND
2019-08-09ND
2019-11-08ND
2019-11-08ND
2021-02-124078640ND
2021-02-124078641ND
2021-05-144121052ND
2021-05-144121053ND
2021-08-134172415ND
2021-08-134172416ND
2021-11-124206218ND
2021-11-124206219ND
2022-02-114244647ND
2022-02-114244648ND
2022-05-134284844ND
2022-05-134284845ND
2022-08-144330625ND
2022-08-174330626ND
2022-11-164374370ND
2022-11-164374371ND
2023-02-104412839ND
2023-02-104412840ND
2023-05-124452304ND
2023-05-124452305ND
2023-08-114499205ND
2023-08-114499206ND
2023-11-0145482970.769 ppb
2023-11-0145482980.722 ppb