Know Your Environment. Protect Your Health.

Chloromethane

City of Hermiston

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND110ND
2015ND10ND
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A
2020N/A00N/A
2021N/A00N/A
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
2014-05-124E14028-09AND
2014-05-124E14028-03AND
2014-05-124E14028-01AND
2014-05-124E14028-07AND
2014-05-124E14028-05AND
2014-09-174I18026-01AND
2014-11-064K07062-07AND
2014-11-064K07062-09AND
2014-11-064K07062-01AND
2014-11-064K07062-05AND
2014-11-064K07062-03AND
2015-02-185B19006-01AND