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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

City of Moses Lake

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.

 

58

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND220ND
2015ND50ND
2016ND70ND
2017ND120ND
2018ND50ND
2019ND70ND

ppb = parts per billion

State and national drinking water standards and health guidelines

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
2014-05-05201405060349AMND
2014-05-05201405060289AMND
2014-05-05201405060321AMND
2014-05-05201405060287AMND
2014-05-05201405060274AMND
2014-05-06201405070333AMND
2014-05-06201405070326AMND
2014-05-06201405070322AMND
2014-05-07201405080477AMND
2014-05-08201405090521AMND
2014-05-12201405130332AMND
2014-11-13201411150149AMND
2014-11-13201411150141AMND
2014-11-13201411150145AMND
2014-11-17201411180458AMND
2014-11-17201411180533AMND
2014-11-17201411180443AMND
2014-11-18201411190307AMND
2014-11-18201411190557AMND
2014-11-18201411190312AMND
2014-11-18201411190555AMND
2014-12-16201412170775AMND
2015-03-1074810ND
2015-05-18201505190555AMND
2015-05-18201505190519AMND
2015-11-10201511110789AMND
2015-11-10201510300173AMND
2016-03-08ND
2016-06-20ND
2016-06-20ND
2016-06-20ND
2016-06-20ND
2016-09-20ND
2016-09-20ND
2017-06-20ND
2017-06-20ND
2017-06-20ND
2017-06-20ND
2017-06-20ND
2017-06-20ND
2017-06-20ND
2017-06-26ND
2017-06-26ND
2017-06-26ND
2017-06-26ND
2017-11-27ND
2018-01-31ND
2018-04-03ND
2018-06-28ND
2018-09-11ND
2018-11-06ND
2019-03-26ND
2019-07-09ND
2019-07-29ND
2019-10-01ND
2019-11-12ND
2019-11-12ND
2019-12-03ND