Know Your Environment. Protect Your Health.

Chloromethane

Spokane County Water District 3, Sys 2

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2015ND50ND
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019ND20ND
2020N/A00N/A
2021ND30ND
2022N/A00N/A
2023N/A00N/A

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
2015-04-06150408024-001ND
2015-05-13150514039-002ND
2015-05-13150514039-001ND
2015-10-20151023001-002ND
2015-10-20151023001-001ND
2019-03-19ND
2019-06-05ND
2021-06-084131877ND
2021-07-074142819ND
2021-07-134146290ND