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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Tract 180 Mutual Water Company

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

 

40

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015ND50ND
2016ND70ND
2017ND80ND
2018ND80ND
2019ND80ND

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
2014-01-279588-004-1012ND
2014-04-159588-004-1035ND
2014-07-319588-004-1445ND
2014-09-249588-005-0940ND
2015-01-285A28049-01AND
2015-05-219588-004-0900ND
2015-08-079588-004-0949ND
2015-08-079588-005-0928ND
2015-10-299588-004-0942ND
2016-03-239588-004-0946ND
2016-06-209588-004-1005ND
2016-06-209588-005-0955ND
2016-07-199588-004-0958ND
2016-07-199588-005-0949ND
2016-10-109588-004-0913ND
2016-10-109588-005-0903ND
2017-01-179588-005-0947ND
2017-01-179588-004-1006ND
2017-04-289588-005-0945ND
2017-04-289588-004-1010ND
2017-07-109588-004-0943ND
2017-07-109588-005-0927ND
2017-10-069588-004-0924ND
2017-10-069588-005-0915ND
2018-01-169588-004-1008ND
2018-01-169588-005-0955ND
2018-04-199588-004-0959ND
2018-04-199588-005-0947ND
2018-07-249588-005-0935ND
2018-07-249588-004-0955ND
2018-10-169588-005-0940ND
2018-10-169588-004-0954ND
2019-01-249588-005-1000ND
2019-01-249588-004-1010ND
2019-05-149588-005-0850ND
2019-05-149588-004-0905ND
2019-08-239588-005-0940ND
2019-08-239588-004-0950ND
2019-10-289588-005-0940ND
2019-10-289588-004-1010ND