Know Your Environment. Protect Your Health.

Bromodichloromethane

Calmar Water Supply

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
2018ND10ND
20190.660 ppb110.660 ppb
20200.770 ppb110.770 ppb
20210.730 ppb110.730 ppb
20221.04 ppb111.04 ppb
20230.700 ppb110.700 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
2018-07-091G80555-01ND
2019-07-081G90677-010.660 ppb
2020-07-061G00450-010.770 ppb
2021-07-121EG1199-010.730 ppb
2022-07-121FG1111-011.04 ppb
2023-07-101GG0740-010.700 ppb