Know Your Environment. Protect Your Health.

Bromodichloromethane

Rra Howardwick

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

 

8

Samples

0

Samples exceeding legal limit (MCL)

3

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND20ND
2020ND10ND
2021ND10ND
20221.16 ppb221.000 ppb - 1.32 ppb
20231.01 ppb111.01 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.06 ppb

The EWG Health Guideline of 0.06 ppb for bromodichloromethane 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
2018-02-28Q1808272004ND
2019-02-05Q1905568002ND
2019-09-03Q1961474002ND
2020-03-17Q2011717001ND
2021-03-02Q2105353003ND
2022-02-10Q22050440031.000 ppb
2022-05-03Q22131850021.32 ppb
2023-02-23Q23076890011.01 ppb