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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Westfield 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

 

51

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND120ND
2014ND80ND
2015ND80ND
2016ND60ND
2017ND60ND
2018ND60ND
2019ND50ND

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 Result
2013-02-27ND
2013-02-27ND
2013-02-27ND
2013-02-27ND
2013-02-27ND
2013-02-27ND
2013-08-19ND
2013-08-19ND
2013-08-19ND
2013-08-19ND
2013-08-19ND
2013-10-23ND
2014-02-26ND
2014-08-15ND
2014-08-15ND
2014-08-15ND
2014-08-15ND
2014-08-15ND
2014-08-15ND
2014-08-15ND
2015-08-20ND
2015-08-20ND
2015-08-20ND
2015-08-20ND
2015-08-20ND
2015-08-20ND
2015-08-20ND
2015-08-20ND
2016-08-23ND
2016-08-23ND
2016-08-23ND
2016-08-23ND
2016-08-23ND
2016-08-23ND
2017-08-23ND
2017-08-23ND
2017-08-23ND
2017-08-23ND
2017-08-23ND
2017-08-23ND
2018-08-29ND
2018-08-29ND
2018-08-29ND
2018-08-29ND
2018-08-29ND
2018-12-20ND
2019-08-15ND
2019-08-15ND
2019-08-15ND
2019-08-15ND
2019-08-15ND