Know Your Environment. Protect Your Health.

Chloromethane

Wyocena 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.

 

9

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.260 ppb110.260 ppb
20190.320 ppb110.320 ppb
20200.330 ppb220.300 ppb - 0.360 ppb
20210.250 ppb220.250 ppb
2022ND10ND
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
2018-07-021447920.260 ppb
2019-07-012996070.320 ppb
2020-04-064053180.300 ppb
2020-04-064053170.360 ppb
2021-02-025307450.250 ppb
2021-02-025307450.250 ppb
2022-01-251095340ND
2023-01-161281123ND
2023-01-161281125ND