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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Montclair Condominiums

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.

 

9

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017ND10ND
2018N/A00N/A
2019ND80ND

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
2017-09-26S022906-01FND
2019-10-18420-162109-2FND
2019-10-18420-162109-4ND
2019-10-18420-162109-1FND
2019-10-18420-162109-2ND
2019-10-18420-162109-4FND
2019-10-18420-162109-3FND
2019-10-18420-162109-1ND
2019-10-18420-162109-3ND