Know Your Environment. Protect Your Health.

Chloromethane

West Knox Utility District

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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND60ND
2014ND20ND
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018ND20ND
2019ND20ND
2020N/A00N/A
2021ND20ND
2022ND20ND
2023ND20ND

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
2013-06-03ND
2013-06-03ND
2013-09-03ND
2013-09-03ND
2013-12-02ND
2013-12-02ND
2014-03-04ND
2014-03-04ND
2018-04-10ND
2018-04-10ND
2019-04-09ND
2019-04-09ND
2021-04-08ND
2021-04-08ND
2022-04-11ND
2022-04-11ND
2023-04-12ND
2023-04-12ND