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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Mount Ebo Ws

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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND100ND
2015ND100ND
2016N/A00N/A
2017N/A00N/A
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
2014-01-20BG02967POCND
2014-01-20BG02964POC2ND
2014-01-20BG02963POCND
2014-01-20BG02965POCND
2014-01-20BG02968POCND
2014-01-20BG02969POCND
2014-01-20BG02966POCND
2014-01-20BG02962POCND
2014-01-20BG02961POCND
2014-01-27BG03428POCND
2015-01-06BH60112POCSND
2015-01-06BH60111POCSND
2015-01-06BH60113POCSND
2015-01-06BH60110POCSND
2015-01-06BH60107POCSND
2015-01-06BH60123POCSND
2015-01-06BH60105POCSND
2015-01-06BH60106POCSND
2015-01-06BH60108POCSND
2015-01-06BH60122POCSND