Know Your Environment. Protect Your Health.

Bromodichloromethane

Orfordville Waterworks

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.

 

14

Samples

0

Samples exceeding legal limit (MCL)

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.600 ppb21ND - 1.20 ppb
20190.445 ppb21ND - 0.890 ppb
20200.367 ppb31ND - 1.10 ppb
20211.50 ppb111.50 ppb
20220.325 ppb41ND - 1.30 ppb
20230.600 ppb21ND - 1.20 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
2018-03-28373260001ND
2018-08-214022790011.20 ppb
2019-07-25459720001ND
2019-09-194713380010.890 ppb
2020-08-17520103001ND
2020-08-17520103002ND
2020-08-175201040011.10 ppb
2021-09-205844100011.50 ppb
2022-03-10609139001ND
2022-06-27627244001ND
2022-09-27645090001ND
2022-09-276450830011.30 ppb
2023-08-24696786001ND
2023-09-227021800011.20 ppb