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EWG's Tap Water Database

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Chloromethane

Bennington 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.

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2010ND10ND
2011ND20ND
2012ND10ND
2013ND70ND
2014ND20ND
2015ND20ND

ppb = parts per billion.

State and national drinking water standards and health guidelines

Health Guideline 2.69 ppb

The 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
2010-01-129885801ND
2011-02-151102058-01ND
2011-02-151102057-01ND
2012-02-141202057-01ND
2013-02-131302060-01ND
2013-04-15714496-8578ND
2013-04-15714498-8578ND
2013-05-21720762-8898ND
2013-08-12736907-9505ND
2013-08-12736890-9505ND
2013-11-12758261-10266ND
2014-02-101402-02560-002ND
2014-02-101402-02560-001ND
2015-02-171502-02721-001ND
2015-11-121511-24580-001ND