Know Your Environment. Protect Your Health.

Bromodichloromethane

Halifax Water Department

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.

 

51

Samples

0

Samples exceeding legal limit (MCL)

33

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.48 ppb97ND - 2.90 ppb
20190.763 ppb85ND - 2.60 ppb
20201.45 ppb85ND - 4.70 ppb
20210.900 ppb85ND - 3.70 ppb
20222.27 ppb96ND - 12.3 ppb
20231.04 ppb95ND - 3.80 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
2018-03-232.90 ppb
2018-06-281.20 ppb
2018-09-131.10 ppb
2018-09-132.10 ppb
2018-09-130.900 ppb
2018-12-18ND
2018-12-18ND
2018-12-182.20 ppb
2018-12-182.90 ppb
2019-03-212.60 ppb
2019-09-241.50 ppb
2019-09-240.600 ppb
2019-09-240.600 ppb
2019-12-06ND
2019-12-06ND
2019-12-06ND
2019-12-060.800 ppb
2020-03-181.30 ppb
2020-06-300.700 ppb
2020-09-304.70 ppb
2020-09-300.700 ppb
2020-09-30ND
2020-12-294.20 ppb
2020-12-29ND
2020-12-29ND
2021-03-30ND
2021-06-303.70 ppb
2021-09-290.500 ppb
2021-09-290.600 ppb
2021-12-291.60 ppb
2021-12-290.800 ppb
2021-12-29ND
2021-12-29ND
2022-03-301.20 ppb
2022-06-293.00 ppb
2022-09-13ND
2022-09-271.000 ppb
2022-09-270.500 ppb
2022-12-16ND
2022-12-1612.3 ppb
2022-12-162.40 ppb
2022-12-16ND
2023-03-293.10 ppb
2023-06-290.900 ppb
2023-09-20ND
2023-09-203.80 ppb
2023-09-20ND
2023-12-27ND
2023-12-271.10 ppb
2023-12-27ND
2023-12-270.500 ppb