Know Your Environment. Protect Your Health.

Chloromethane

Laurel Mountain Lakes Water Association

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
2020N/A00N/A
2021ND10ND
2022ND60ND
2023ND40ND

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
2018-08-29ND
2019-05-07ND
2021-05-04ND
2022-04-19ND
2022-04-19ND
2022-08-17ND
2022-08-17ND
2022-11-08ND
2022-11-08ND
2023-02-28ND
2023-04-24ND
2023-08-01ND
2023-11-14ND