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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Vernon 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.

MORE ABOUT THIS CONTAMINANT

 

48

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND140ND
2015ND30ND
2016ND70ND
2017ND80ND
2018ND50ND
2019ND110ND

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
2014-04-24201404250409AMND
2014-04-24201404250415AMND
2014-04-24201404250411AMND
2014-04-24201404250225AMND
2014-04-24201404250227AMND
2014-04-24201404250413AMND
2014-04-24201404250223AMND
2014-07-24201407250401AMND
2014-10-23201410240344AMND
2014-10-23201410240346AMND
2014-10-23201410240342AMND
2014-10-23201410240336AMND
2014-10-23201410240340AMND
2014-10-23201410240338AMND
2015-01-22201501230162AMND
2015-01-22201501200175AMND
2015-07-30201507310226AMND
2016-02-259588-011-0935ND
2016-02-259588-006-0920ND
2016-02-259588-009-0950ND
2016-05-269588-010-0850ND
2016-05-269588-014-0920ND
2016-08-299588-013-0955ND
2016-11-289588-010-0920ND
2017-02-239588-010-0900ND
2017-02-239588-006-0915ND
2017-02-239588-011-0925ND
2017-02-239588-009-0930ND
2017-05-249588-014-0955ND
2017-05-249588-010-0905ND
2017-08-249588-013-1010ND
2017-08-249588-005-0920ND
2018-02-229588-006-0955ND
2018-02-229588-011-1010ND
2018-02-229588-009-0935ND
2018-05-249588-014-0950ND
2018-08-309588-013-0900ND
2019-01-149588-010-1017ND
2019-02-289588-006-0925ND
2019-02-289588-009-0915ND
2019-05-099588-010-1005ND
2019-05-239588-014-1050ND
2019-07-179588-010-0920ND
2019-08-209588-010-0845ND
2019-08-209588-013-0920ND
2019-09-309588-005-1300ND
2019-11-279588-005-0815ND
2019-12-129588-010-0830ND