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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Amicks Ferry Water System

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.

 

22

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND60ND
2015ND40ND
2016ND40ND
2017ND80ND
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
2014-02-10AD35454ND
2014-02-10AD35453ND
2014-04-23AD38773ND
2014-05-29AD40494ND
2014-08-12AD43861ND
2014-10-14AD46716ND
2015-02-12AD51513ND
2015-05-14AD55496ND
2015-08-25AD59968ND
2015-10-20AD63084ND
2016-02-04AD70189ND
2016-06-13AD77137ND
2016-08-23AD81172ND
2016-10-17AD83981ND
2017-01-24AD88664ND
2017-01-24AD88665ND
2017-01-24AD88668ND
2017-01-24AD88667ND
2017-01-24AD88666ND
2017-05-02AD93496ND
2017-07-20AD97808ND
2017-10-05AE01543ND