Know Your Environment. Protect Your Health.

Dibromochloromethane

Pawc Brownell

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.

 

96

Samples

0

Samples exceeding legal limit (MCL)

41

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.369 ppb168ND - 1.10 ppb
20190.294 ppb165ND - 1.70 ppb
20200.319 ppb168ND - 0.900 ppb
20210.0313 ppb161ND - 0.500 ppb
20220.325 ppb167ND - 1.000 ppb
20230.706 ppb1612ND - 1.30 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
2018-02-05385379010.700 ppb
2018-02-0538537601ND
2018-02-0538537501ND
2018-02-0538537701ND
2018-05-03393834010.500 ppb
2018-05-0339383201ND
2018-05-03393837010.600 ppb
2018-05-0339383501ND
2018-08-03406403010.600 ppb
2018-08-03406402010.700 ppb
2018-08-03406404010.700 ppb
2018-08-08406406011.000 ppb
2018-11-0541763701ND
2018-11-05417638011.10 ppb
2018-11-0541763501ND
2018-11-0741763601ND
2019-02-0542851901ND
2019-02-05428520010.800 ppb
2019-02-0542799601ND
2019-02-0542851801ND
2019-05-0344012701ND
2019-05-0344012801ND
2019-05-0344012601ND
2019-05-03440129010.600 ppb
2019-08-06458256010.600 ppb
2019-08-06458259011.70 ppb
2019-08-0645825801ND
2019-08-0645825701ND
2019-11-06473624011.000 ppb
2019-11-0647362301ND
2019-11-0647362201ND
2019-11-0647362101ND
2020-02-050.700 ppb
2020-02-05ND
2020-02-05ND
2020-02-05ND
2020-05-05ND
2020-05-05ND
2020-05-05ND
2020-05-050.600 ppb
2020-08-040.600 ppb
2020-08-040.600 ppb
2020-08-040.500 ppb
2020-08-040.900 ppb
2020-11-03ND
2020-11-03ND
2020-11-030.500 ppb
2020-11-030.700 ppb
2021-02-04ND
2021-02-04ND
2021-02-04ND
2021-02-04ND
2021-05-030.500 ppb
2021-05-03ND
2021-05-03ND
2021-05-03ND
2021-08-04ND
2021-08-04ND
2021-08-04ND
2021-08-04ND
2021-11-04ND
2021-11-04ND
2021-11-04ND
2021-11-04ND
2022-02-03ND
2022-02-03ND
2022-02-03ND
2022-02-03ND
2022-05-04ND
2022-05-04ND
2022-05-04ND
2022-05-04ND
2022-08-030.600 ppb
2022-08-030.700 ppb
2022-08-030.700 ppb
2022-08-030.500 ppb
2022-11-031.000 ppb
2022-11-030.900 ppb
2022-11-030.800 ppb
2022-11-03ND
2023-02-030.700 ppb
2023-02-030.700 ppb
2023-02-030.700 ppb
2023-02-03ND
2023-05-030.900 ppb
2023-05-030.900 ppb
2023-05-030.900 ppb
2023-05-030.800 ppb
2023-08-031.30 ppb
2023-08-031.10 ppb
2023-08-031.20 ppb
2023-08-031.000 ppb
2023-11-031.10 ppb
2023-11-06ND
2023-11-06ND
2023-11-06ND