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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

City of Ammon

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND50ND
2014ND50ND
2015N/A00N/A
2016N/A00N/A
2017ND20ND
2018N/A00N/A
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
2013-10-232918345ND
2013-10-232918315ND
2013-10-232918175ND
2013-10-232918231ND
2013-10-232918336ND
2014-04-143009986ND
2014-04-143010031ND
2014-04-143010003ND
2014-04-143010069ND
2014-04-143010102ND
2017-09-19VT170927301ND
2017-09-19VT170927302ND