Know Your Environment. Protect Your Health.

Bromodichloromethane

Mendon City

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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.300 ppb31ND - 0.900 ppb
20190.200 ppb31ND - 0.600 ppb
20200.600 ppb220.600 ppb
20210.400 ppb32ND - 0.600 ppb
2022ND30ND
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 Result
2018-08-15ND
2018-08-150.900 ppb
2018-11-07ND
2019-08-07ND
2019-08-070.600 ppb
2019-08-07ND
2020-09-300.600 ppb
2020-09-300.600 ppb
2021-08-180.600 ppb
2021-08-180.600 ppb
2021-08-18ND
2022-09-13ND
2022-09-13ND
2022-09-13ND
2023-08-15ND
2023-08-16ND