Know Your Environment. Protect Your Health.

Dibromochloromethane

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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.

 

14

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019N/A00N/A
2020ND40ND
2021N/A00N/A
2022ND50ND
20230.150 ppb51ND - 0.750 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
2020-04-242004061ND
2020-04-242004062ND
2020-04-242004060ND
2020-09-222012865ND
2022-02-142121356ND
2022-05-112202658ND
2022-05-112204158ND
2022-07-272214506ND
2022-10-182219530ND
2023-01-1822229530.750 ppb
2023-04-062303249ND
2023-08-152309778ND
2023-08-152311357ND
2023-10-172316658ND