Know Your Environment. Protect Your Health.

Chloromethane

Tri County Point Water System 3

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.

 

12

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
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 Lab ID Result
2018-03-13AE18157ND
2018-03-13AE18159ND
2019-04-15AE62285ND
2019-04-15AE62289ND
2020-03-24AF04311ND
2020-03-24AF04339ND
2021-07-08AF61162ND
2021-09-21AF70619ND
2022-10-05AG16099ND
2022-10-05AG16101ND
2023-02-27AG30611ND
2023-02-27AG30617ND