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EWG's Tap Water Database — 2019 UPDATE

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Chloromethane

Bartlett

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
2012N/A00N/A
2013ND50ND
2014ND50ND
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A

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
2013-09-1023373201ND
2013-09-1023373101ND
2013-09-1023373301ND
2013-09-1023372901ND
2013-12-1024242801ND
2014-03-1125045301ND
2014-03-1125045201ND
2014-03-1125045101ND
2014-06-1026040201ND
2014-12-1025045401ND