Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Chloromethane

Pennsylvania American Royersford

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
2012N/A00N/A
2013N/A00N/A
2014N/A00N/A
2015ND120ND
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

Date Lab ID Result
2015-03-0428404001ND
2015-03-0428403901ND
2015-03-0428403601ND
2015-03-0928403801ND
2015-03-1028403701ND
2015-06-1029084101ND
2015-09-0130138401ND
2015-09-0130138501ND
2015-09-0130138201ND
2015-09-0130138101ND
2015-09-1630138301ND
2015-12-0230794001ND