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EWG's Tap Water Database — 2019 UPDATE

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Chloromethane

Wellborn SUD

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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013ND30ND
2014ND30ND
2015ND80ND
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 Lab ID Result
2012-06-18AB93093ND
2012-09-12AC00839ND
2013-09-23Q1307889005ND
2013-12-12Q1317624022ND
2013-12-12Q1317624030ND
2014-04-07AC49476ND
2014-04-07AC49474ND
2014-09-10AC66591ND
2015-03-24AC85862ND
2015-03-24AC85884ND
2015-03-24AC85872ND
2015-03-24AC85874ND
2015-03-24AC85864ND
2015-05-27AC93421ND
2015-09-30AD09128ND
2015-12-07AD15734ND
2016-03-09AD27935ND
2016-03-09AD27931ND
2016-03-09AD27937ND
2016-03-09AD27933ND
2017-03-07AD73764ND
2017-03-07AD73762ND
2017-11-21AE05570ND
2017-11-21AE05566ND