Know Your Environment. Protect Your Health.

Chloromethane

Dorchester, Village of

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.

 

13

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND10ND
2020ND30ND
2021ND10ND
2022ND20ND
2023ND50ND

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 Lab ID Result
2018-07-16560158ND
2019-07-15621241ND
2020-05-26667014ND
2020-09-14684285ND
2020-09-28701100ND
2021-07-19745978ND
2022-07-05809302ND
2022-07-27818275ND
2023-01-17842469ND
2023-04-24855387ND
2023-05-15855924ND
2023-07-17873260ND
2023-10-16891653ND