Know Your Environment. Protect Your Health.

Chloromethane

Halifax Water Department

Chloromethane is an industrial solvent, aerosol propellant and a refrigerant. It also forms as a byproduct of water disinfection. The EPA classifies chloromethane as possibly carcinogenic to humans.

 

39

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND40ND
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018ND70ND
2019ND60ND
2020ND60ND
2021ND60ND
2022ND70ND
2023ND70ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 2.69 ppb

The EWG Health Guideline of 2.69 ppb for chloromethane was defined by the Environmental Protection Agency as a benchmark for testing under the Unregulated Contaminant Monitoring Rule program. This health guideline protects against cancer.

ppb = parts per billion

All test results

Date Result
2018-03-23ND
2018-06-28ND
2018-09-13ND
2018-12-18ND
2018-12-18ND
2018-12-18ND
2018-12-18ND
2019-03-21ND
2019-09-24ND
2019-12-06ND
2019-12-06ND
2019-12-06ND
2019-12-06ND
2020-03-18ND
2020-06-30ND
2020-09-30ND
2020-12-29ND
2020-12-29ND
2020-12-29ND
2021-03-30ND
2021-06-30ND
2021-12-29ND
2021-12-29ND
2021-12-29ND
2021-12-29ND
2022-03-30ND
2022-06-29ND
2022-09-13ND
2022-12-16ND
2022-12-16ND
2022-12-16ND
2022-12-16ND
2023-03-29ND
2023-06-29ND
2023-09-20ND
2023-12-27ND
2023-12-27ND
2023-12-27ND
2023-12-27ND