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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Bainbridge

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
2014ND40ND
2015ND40ND
2016N/A00N/A
2017ND40ND
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
2014-10-01AI56333ND
2014-10-01AI56334ND
2014-10-01AI56335ND
2014-10-01AI56336ND
2015-03-183209368ND
2015-03-193210499ND
2015-09-283331505ND
2015-09-283331547ND
2017-09-25AJ69327ND
2017-09-25AJ69328ND
2017-09-25AJ69329ND
2017-09-25AJ69330ND