Know Your Environment. Protect Your Health.

Chloromethane

Lacey 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.

 

44

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND130ND
2015ND130ND
2016N/A00N/A
2017N/A00N/A
2018ND10ND
2019ND20ND
2020N/A00N/A
2021ND50ND
2022ND90ND
2023ND10ND

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
2014-12-02201412040255AMND
2014-12-02201412040482AMND
2014-12-02201412040492AMND
2014-12-02201412040301AMND
2014-12-03201412050482AMND
2014-12-03201412040287AMND
2014-12-03201412040345AMND
2014-12-03201412050406AMND
2014-12-03201412050528AMND
2014-12-03201412040484AMND
2014-12-04201412050498AMND
2014-12-04201412050473AMND
2014-12-04201412040579AMND
2015-06-29201506300498AMND
2015-06-29201506300314AMND
2015-06-29201506300274AMND
2015-06-29201506300327AMND
2015-06-29201506300307AMND
2015-06-29201506300268AMND
2015-06-29201506300521AMND
2015-06-30201507010636AMND
2015-06-30201507010547AMND
2015-06-30201507010336AMND
2015-06-30201507010523AMND
2015-06-30201507010550AMND
2015-06-30201507010518AMND
2018-04-26ND
2019-06-20ND
2019-11-13ND
2021-09-134178879ND
2021-09-134178876ND
2021-09-134178874ND
2021-09-134178883ND
2021-09-144178973ND
2022-09-264367968ND
2022-09-274361750ND
2022-10-254374622ND
2022-10-254374626ND
2022-10-264374712ND
2022-10-274374639ND
2022-11-284384852ND
2022-11-284384848ND
2022-12-294401375ND
2023-01-264481718ND