Know Your Environment. Protect Your Health.

Chloromethane

Othello 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.

 

32

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND140ND
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018ND10ND
2019ND20ND
2020N/A00N/A
2021ND50ND
2022ND80ND
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
2014-01-21103795PND
2014-01-21103796PND
2014-01-21103798PND
2014-01-21103800PND
2014-01-21103801PND
2014-02-18105821RND
2014-02-18105822RND
2014-07-14107864PND
2014-07-14107863PND
2014-07-14107865PND
2014-07-14107866PND
2014-07-14107867PND
2014-07-14107868PND
2014-07-14107869PND
2018-12-13ND
2019-06-18ND
2019-07-08ND
2021-03-314102279ND
2021-08-114169108ND
2021-08-114169236ND
2021-10-134202781ND
2021-10-134202782ND
2022-03-154263100ND
2022-06-024298828ND
2022-06-084298813ND
2022-06-084298812ND
2022-08-084335854ND
2022-09-064364663ND
2022-09-064364651ND
2022-10-064364641ND
2023-04-174448578ND
2023-06-124499780ND