Know Your Environment. Protect Your Health.

Bromodichloromethane

Briggsville Water District

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.

 

9

Samples

0

Samples exceeding legal limit (MCL)

4

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
20190.415 ppb21ND - 0.830 ppb
2020ND10ND
20211.07 ppb111.07 ppb
20220.720 ppb110.720 ppb
20230.247 ppb31ND - 0.740 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 Result
2018-04-18ND
2019-04-170.830 ppb
2019-08-19ND
2020-06-04ND
2021-04-211.07 ppb
2022-04-130.720 ppb
2023-04-12ND
2023-09-130.740 ppb
2023-10-18ND