Know Your Environment. Protect Your Health.

Chloromethane

Maple Bluff Waterworks

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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

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

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
2018-08-02398373001ND
2018-08-02398375001ND
2019-08-01460856001ND
2019-08-01460857001ND
2020-08-10518995001ND
2020-08-10518994001ND
2021-09-21585000001ND
2021-09-21585001001ND
2022-02-07604608001ND
2022-04-13613891001ND
2022-08-08635376001ND
2022-08-08635377001ND
2022-10-17648739001ND
2023-08-01692027001ND
2023-08-01692024001ND
2023-10-24707622001ND