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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Morrisville State College

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.

 

21

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND60ND
2015ND30ND
2016ND30ND
2017ND30ND
2018ND30ND
2019ND30ND

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
2014-01-1601161401CND
2014-05-2005201401CPOCND
2014-08-1408141401CPOCND
2014-11-2011201402CND
2014-11-2011201403CND
2014-11-2011201401CND
2015-11-1611161507CPOCND
2015-11-1611161506CPOCND
2015-11-1611161505CPOCND
2016-11-0111011603CND
2016-11-0111011602CND
2016-11-0111011601CND
2017-12-1412141703CND
2017-12-1412141705CND
2017-12-1412141704CND
2018-11-0811081803CND
2018-11-0811081802CND
2018-11-0811081801CND
2019-10-1710171905CPOCND
2019-10-1710171907CPOCND
2019-10-1710171906CPOCND