Know Your Environment. Protect Your Health.

Chloromethane

Battle Ground Water Department

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.

 

19

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2015ND60ND
2016N/A00N/A
2017N/A00N/A
2018ND20ND
2019ND20ND
2020N/A00N/A
2021ND20ND
2022ND40ND
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
2015-04-28A5D1874-04AND
2015-04-28A5D1874-01AND
2015-04-28A5D1874-10AND
2015-10-14A5I2465-01AND
2015-10-14A5I2465-04AND
2015-10-14A5I2465-10AND
2018-04-10ND
2018-07-18ND
2019-05-21ND
2019-11-07ND
2021-06-234188694ND
2021-10-194194906ND
2022-05-314292477ND
2022-05-314292478ND
2022-06-294303896ND
2022-10-274370656ND
2023-06-074473915ND
2023-07-184488413ND
2023-12-054570035ND