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EWG's Tap Water Database

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Chloromethane

James Fork Regional Water District

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2010ND10ND
2011ND10ND
2012ND10ND
2013ND50ND
2014ND10ND
2015ND10ND

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
2010-03-1510076002901ND
2011-02-2211055003201ND
2012-01-0312006012201ND
2013-01-2913031004801ND
2013-02-11O130450009ND
2013-05-13O131360016ND
2013-08-12O132270059ND
2013-11-12O133180023ND
2014-01-2714030003301ND
2015-01-2015023000601ND