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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Fitzgerald

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
2014ND80ND
2015ND10ND
2016N/A00N/A
2017ND40ND
2018ND10ND
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
2014-05-28AI41564ND
2014-05-28AI41565ND
2014-05-28AI41566ND
2014-05-28AI41567ND
2014-06-0525999301ND
2014-06-0525999201ND
2014-12-0127717801ND
2014-12-0127717901ND
2015-06-09AI79300ND
2017-02-23AJ47039ND
2017-02-23AJ47040ND
2017-02-23AJ47041ND
2017-02-23AJ47042ND
2018-06-18AJ91829ND