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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Pangburn

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.

 

13

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND10ND
2015ND20ND
2016ND50ND
2017ND30ND
2018ND10ND
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
2014-11-0414310000102ND
2015-11-0315309007802ND
2015-12-0215337007101ND
2016-02-0416036004901ND
2016-06-0816160003401ND
2016-08-2916245000301ND
2016-10-0316280013808ND
2016-11-1516321002002ND
2017-01-2517026001601ND
2017-04-1717110003401ND
2017-10-0217278014202ND
2018-10-3118305002802ND
2019-10-3019304002907ND