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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Romeoville

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.

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND70ND
2015ND70ND
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/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
2014-09-0927047101ND
2014-09-0927046701ND
2014-09-0927047001ND
2014-09-0927046601ND
2014-09-0927046901ND
2014-09-0927046801ND
2014-11-1227047201ND
2015-03-1028390201ND
2015-03-1028390001ND
2015-03-1028389701ND
2015-03-1028389801ND
2015-03-1028389601ND
2015-03-1028389901ND
2015-07-1428390101ND