Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Chloromethane

Greenville Water System

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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013ND20ND
2014ND100ND
2015ND20ND
2016ND20ND
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
2012-01-03AD00645ND
2012-01-03AD00647ND
2013-01-10AD18209ND
2013-01-10AD18219ND
2014-01-13201401150562AMND
2014-01-13201401150570AMND
2014-01-27AD34962ND
2014-01-27AD34958ND
2014-04-15201404170319AMND
2014-04-15201404170438AMND
2014-07-14201407160555AMND
2014-07-14201407160641AMND
2014-10-13201410150270AMND
2014-10-13201410150258AMND
2015-02-03AD51022ND
2015-02-03AD51025ND
2016-01-27AD69773ND
2016-01-27AD69775ND
2017-02-07AD89487ND
2017-07-18AD97741ND