Know Your Environment. Protect Your Health.

Chloromethane

Ely Municipal 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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND30ND
2014ND30ND
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018ND10ND
2019ND40ND
2020N/A00N/A
2021N/A00N/A
2022ND50ND
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
2013-02-27100397QND
2013-10-23101945PND
2013-10-23101946PND
2014-03-12102900RND
2014-03-12102901RND
2014-03-12102903RND
2018-11-0818110223-007ND
2019-11-1419110404-002ND
2019-11-1419110404-003ND
2019-11-1419110404-005ND
2019-11-2119110631-001ND
2022-05-1222050451-001ND
2022-05-1222050451-002ND
2022-07-0722070169-002ND
2022-07-0722070169-003ND
2022-07-0722070169-004ND