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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Friona Municipal 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.

MORE ABOUT THIS CONTAMINANT

 

33

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND80ND
2014ND30ND
2015ND60ND
2016ND40ND
2017ND40ND
2018ND40ND
2019ND40ND

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
2013-05-21101402PND
2013-05-21101403PND
2013-05-21101404PND
2013-05-21101405PND
2013-12-09102925RND
2013-12-09102922RND
2013-12-09102923RND
2013-12-09102924RND
2014-01-22Q1401972008ND
2014-01-22Q1401972005ND
2014-01-22Q1401972001ND
2015-02-03Q1503981004ND
2015-02-03Q1503981002ND
2015-04-15Q1514095006ND
2015-04-15Q1514095004ND
2015-09-02Q1533871006ND
2015-11-24Q1546776004ND
2016-02-02Q1604458008ND
2016-02-02Q1604458005ND
2016-02-02Q1604458003ND
2016-02-02Q1604458002ND
2017-01-17Q1702057002ND
2017-01-17Q1702057015ND
2017-04-13Q1715358002ND
2017-07-19Q1729779008ND
2018-01-16Q1801773012ND
2018-01-16Q1801773005ND
2018-04-10Q1814553005ND
2018-07-30Q1830046007ND
2019-01-17Q1902751004ND
2019-01-17Q1902751001ND
2019-04-23Q1916176007ND
2019-07-08Q1942259004ND