Know Your Environment. Protect Your Health.

Bromodichloromethane

Rimrock Road Neighborhood

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.

 

6

Samples

0

Samples exceeding legal limit (MCL)

5

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.380 ppb110.380 ppb
20190.330 ppb110.330 ppb
2020ND10ND
20211.40 ppb111.40 ppb
20220.540 ppb110.540 ppb
20230.750 ppb110.750 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
2018-08-1610746610.380 ppb
2019-08-1511414110.330 ppb
2020-08-041204990ND
2021-08-0312691681.40 ppb
2022-08-0213276360.540 ppb
2023-08-02CB09029-010.750 ppb