Know Your Environment. Protect Your Health.

Chloromethane

Pepperell DPW Water Division

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
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018ND60ND
2019ND60ND
2020ND60ND
2021ND80ND
2022ND60ND
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
2018-04-02ND
2018-04-02ND
2018-04-02ND
2018-04-02ND
2018-04-02ND
2018-04-02ND
2019-05-06ND
2019-05-06ND
2019-05-06ND
2019-05-06ND
2019-05-06ND
2019-05-06ND
2020-06-02ND
2020-06-02ND
2020-06-02ND
2020-06-02ND
2020-06-02ND
2020-06-02ND
2021-05-12ND
2021-05-12ND
2021-05-12ND
2021-05-12ND
2021-05-12ND
2021-08-17ND
2021-08-17ND
2021-08-17ND
2022-04-19ND
2022-04-19ND
2022-04-19ND
2022-04-19ND
2022-04-19ND
2022-04-19ND
2023-04-04ND
2023-04-04ND
2023-04-04ND
2023-04-04ND
2023-04-04ND
2023-04-04ND
2023-05-03ND