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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Cole County PWSD 2

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
2013ND120ND
2014ND60ND
2015ND70ND
2016N/A00N/A
2017N/A00N/A
2018ND70ND
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
2013-03-263588067005AMND
2013-03-263588067003AMND
2013-03-263588067011AMND
2013-03-263588067009AMND
2013-03-263588067007AMND
2013-03-263588067001AMND
2013-10-1535112450003AMND
2013-10-1535112450005AMND
2013-10-1535112450001AMND
2013-10-1535112450009AMND
2013-10-1535112450007AMND
2013-10-1535112450011AMND
2014-03-06AC20724ND
2014-03-06AC20723ND
2014-03-06AC20725ND
2014-03-06AC20726ND
2014-03-06AC20727ND
2014-03-06AC20728ND
2015-02-25AC42783ND
2015-02-25AC42786ND
2015-02-25AC42785ND
2015-02-25AC42784ND
2015-02-25AC42782ND
2015-02-25AC42787ND
2015-02-25AC42788ND
2018-05-07AD19068ND
2018-05-07AD19074ND
2018-05-07AD19073ND
2018-05-07AD19072ND
2018-05-07AD19071ND
2018-05-07AD19070ND
2018-05-07AD19069ND