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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Aqua Ohio - Ashtabula

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
2013ND40ND
2014ND10ND
2015ND10ND
2016ND10ND
2017ND10ND
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
2013-02-13201302140637AMND
2013-05-20201305210132AMND
2013-08-12201308130070AMND
2013-11-12201311130381AMND
2014-02-05AE23120ND
2015-02-03AE64951ND
2016-02-03AF07022ND
2017-03-01AF44955ND
2018-02-01AF75346ND
2019-02-04AG08005ND