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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Woodstock

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.

MORE ABOUT THIS CONTAMINANT

 

32

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015ND70ND
2016N/A00N/A
2017N/A00N/A
2018ND150ND
2019ND100ND

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
2015-04-0935183541003AMND
2015-04-0935183541001AMND
2015-07-0835196762001AMND
2015-09-1835208156001AMND
2015-09-1835208156003AMND
2015-12-0735219995003AMND
2015-12-0735219995001AMND
2018-04-10AJ87090ND
2018-04-10AJ87089ND
2018-04-10AJ87088ND
2018-04-10AJ87087ND
2018-04-10AJ87086ND
2018-07-10AJ93443ND
2018-07-10AJ93446ND
2018-07-10AJ93445ND
2018-07-10AJ93444ND
2018-07-10AJ93442ND
2018-12-18AK08333ND
2018-12-18AK08332ND
2018-12-18AK08331ND
2018-12-18AK08330ND
2018-12-18AK08329ND
2019-01-08AK09031ND
2019-01-08AK09030ND
2019-01-08AK09029ND
2019-01-08AK09028ND
2019-01-08AK09027ND
2019-04-15AK15169ND
2019-04-15AK15173ND
2019-04-15AK15172ND
2019-04-15AK15171ND
2019-04-15AK15170ND