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EWG's Tap Water Database — 2019 UPDATE

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Chloromethane

Deerfield

NOTE: Deerfield purchases water from Highland Park which is required to test for chloromethane. Sample information shown below was taken by Highland Park.

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.

 

4

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013ND40ND
2014ND20ND
2015N/A00N/A
2016N/A00N/A
2017N/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

NOTE: Deerfield purchases water from Highland Park which is required to test for chloromethane. Sample information shown below was taken by Highland Park.

Date Lab ID Result
2013-09-182899540ND
2013-12-112944679ND
2014-03-102988740ND
2014-06-093040970ND