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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Dunkirk City and Area

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
2013ND10ND
2014ND30ND
2015ND10ND
2016ND10ND
2017ND10ND
2018ND20ND
2019ND10ND

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
2013-11-121058200003ND
2014-02-06POC2014 DUNKIRKND
2014-05-012005368001ND
2014-08-072024503001ND
2015-02-05POCS15 DUNKIRKND
2016-03-23POCS DUNKIRK 201ND
2017-04-05POC 2017 DUNKIRKND
2018-08-01POCS 18 DUNKIRKND
2018-08-01POCS 2018 DUNKIRND
2019-07-10POCS 19 DUNKIRKND