Know Your Environment. Protect Your Health.

Chloromethane

Devens Massdevelopment

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.

 

31

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
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018ND20ND
2019ND30ND
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
2018-04-18ND
2018-04-18ND
2019-04-10ND
2019-04-10ND
2019-11-12ND
2020-05-20ND
2020-05-20ND
2020-05-20ND
2020-05-20ND
2020-05-20ND
2020-05-20ND
2021-04-28ND
2021-04-28ND
2021-04-28ND
2021-04-28ND
2021-04-28ND
2021-04-28ND
2022-05-27ND
2022-06-01ND
2022-06-01ND
2022-06-01ND
2022-06-01ND
2022-06-01ND
2022-06-01ND
2023-06-07ND
2023-06-07ND
2023-06-14ND
2023-06-14ND
2023-06-14ND
2023-06-14ND
2023-10-05ND