Know Your Environment. Protect Your Health.

Chloromethane

Olympic View Water & Sewer District

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.

 

9

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015ND30ND
2016N/A00N/A
2017N/A00N/A
2018ND10ND
2019N/A00N/A
2020N/A00N/A
2021N/A00N/A
2022ND10ND
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
2014-07-14201407150325AMND
2014-07-14201407150400AMND
2014-10-27201410280503AMND
2014-10-27201410280619AMND
2015-01-13201501150011AMND
2015-01-13201501140776AMND
2015-04-15201504160457AMND
2018-06-06ND
2022-02-234253232ND