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EWG's Tap Water Database — 2019 UPDATE

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Chloromethane

Shawnee County RWD 4C

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
2012N/A00N/A
2013N/A00N/A
2014ND70ND
2015N/A00N/A
2016N/A00N/A
2017ND20ND

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
2014-05-0535136691003AMND
2014-05-0535136691005AMND
2014-05-0535136691001AMND
2014-08-1135150019001AMND
2014-11-0335162147005AMND
2014-11-0335162147001AMND
2014-11-0335162147003AMND
2017-11-27882099_PACEND
2017-11-27882098_PACEND