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EWG's Tap Water Database — 2019 UPDATE

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Chloromethane

Tennessee American Water

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.

 

22

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND30ND
2013ND20ND
2014ND40ND
2015ND50ND
2016ND40ND
2017ND40ND

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
2012-02-15ND
2012-08-08ND
2012-11-15ND
2013-02-12ND
2013-05-08ND
2014-02-04ND
2014-05-14ND
2014-11-11ND
2014-12-02ND
2015-03-03ND
2015-04-08ND
2015-06-02ND
2015-07-07ND
2015-09-14ND
2016-01-19ND
2016-04-11ND
2016-07-13ND
2016-10-13ND
2017-01-10ND
2017-04-17ND
2017-07-11ND
2017-10-09ND