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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Emerald Lakes Subdivision

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.

 

13

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND10ND
2015ND20ND
2016ND40ND
2017ND20ND
2018ND20ND
2019ND20ND

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
2014-04-03AC49248ND
2015-09-09AD06211ND
2015-11-18AD14045ND
2016-01-28AD20704ND
2016-01-28AD20708ND
2016-06-02AD39177ND
2016-09-29AD52084ND
2017-11-13AE04548ND
2017-11-13AE04550ND
2018-09-21AE41289ND
2018-09-21AE41291ND
2019-06-13AE70595ND
2019-06-13AE70605ND