Menu

EWG's Tap Water Database

Donate

Chloromethane

South Hero Fire District 4

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.

 

6

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2010ND10ND
2011ND10ND
2012ND10ND
2013ND10ND
2014ND10ND
2015ND10ND

ppb = parts per billion.

State and national drinking water standards and health guidelines

Health Guideline 2.69 ppb

The 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
2010-04-0610V267ND
2011-03-2711V206ND
2012-03-1312V174ND
2013-03-0613V00160ND
2014-02-1114V00131ND
2015-03-2515V00185ND