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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Pawtucket

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

 

37

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND30ND
2014ND90ND
2015ND40ND
2016ND40ND
2017ND90ND
2018ND40ND
2019ND40ND

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
2013-04-10201304110600AMND
2013-07-10201307110693AMND
2013-10-09201310100576AMND
2014-01-08201401090657AMND
2014-01-271401232-01_TO12ND
2014-03-271402016-02_TO12ND
2014-03-271402016-01_TO12ND
2014-04-071402198-05_TO12ND
2014-04-071402198-07_TO12ND
2014-04-071402198-03_TO12ND
2014-04-071402198-04_TO12ND
2014-04-071402198-06_TO12ND
2015-03-311501722-01_TO12ND
2015-03-311501722-02_TO12ND
2015-03-311501722-03_TO12ND
2015-04-281501999-02_TO12ND
2016-03-221601566-02_TO12ND
2016-03-221601566-01_TO12ND
2016-06-071602458-01_TO12ND
2016-06-271602860-01_TO12ND
2017-02-011701096-01_TO12ND
2017-03-291701674-01_TO12ND
2017-03-291701674-02_TO12ND
2017-04-171701862-06_TO12ND
2017-04-171701862-02_TO12ND
2017-04-171701862-01_TO12ND
2017-04-171701862-03_TO12ND
2017-04-171701862-04_TO12ND
2017-11-011704846-01_TO12ND
2018-03-281801540-03_TO12ND
2018-03-281801540-02_TO12ND
2018-03-281801540-01_TO12ND
2018-04-301801885-02_TO12ND
2019-03-261901463-01_TO12ND
2019-03-261901463-03_TO12ND
2019-03-261901463-02_TO12ND
2019-06-271902770-01_TO12ND