Know Your Environment. Protect Your Health.

Chloromethane

Deforest 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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND20ND
2020ND40ND
2021ND20ND
2022ND10ND
2023ND120ND

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
2018-03-131044928ND
2018-03-131044929ND
2018-08-29404007001ND
2019-06-191129331ND
2019-06-191129330ND
2020-06-021191108ND
2020-06-021191109ND
2020-06-021191107ND
2020-06-021191092ND
2021-04-131248611ND
2021-04-131248610ND
2022-07-261326226ND
2023-03-21669283001ND
2023-03-21669282001ND
2023-06-08682745001ND
2023-06-08682743001ND
2023-07-25691015001ND
2023-07-25691015002ND
2023-09-07698953003ND
2023-09-07698953001ND
2023-09-19701208001ND
2023-09-19701205001ND
2023-12-12714406001ND
2023-12-12714406002ND