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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Oneonta City

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.

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND30ND
2014ND30ND
2015N/A00N/A
2016ND20ND
2017ND20ND
2018ND20ND
2019ND20ND

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
2013-04-171023041002ND
2013-07-241039594003ND
2013-10-231055669003ND
2014-02-051071123003ND
2014-10-01POC WTP 2015ND
2014-10-01S4J0343-01ND
2016-10-05ONEONTA EP POC 1ND
2016-10-05CATTELA POC 16ND
2017-06-15CATTELA 2017ND
2017-06-15ONEONTA WTP POCND
2018-06-207055940 POCND
2018-08-08POC ONE CATELLAND
2019-12-05ONEONTA WTP POCND
2019-12-05ONEONTA POC CATEND