Know Your Environment. Protect Your Health.

Bromodichloromethane

South Meadows West

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND20ND
2020ND10ND
20210.400 ppb41ND - 1.60 ppb
2022ND20ND
2023ND20ND

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
2018-03-29AE20638ND
2019-09-18AE83960ND
2019-12-19AE92799ND
2020-05-18AF11654ND
2021-06-18AF58805ND
2021-06-18AF589031.60 ppb
2021-09-20AF70451ND
2021-10-05AF72289ND
2022-09-13AG12600ND
2022-11-29AG20064ND
2023-07-24AG49785ND
2023-07-24AG49846ND