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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Goforth SUD

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.

 

19

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND110ND
2014ND20ND
2015ND10ND
2016ND10ND
2017ND20ND
2018ND10ND
2019ND10ND

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
2013-04-161304553-001DND
2013-04-161304553-003DND
2013-04-161304553-007DND
2013-05-21Q1301321003ND
2013-05-21Q1301321001ND
2013-07-17Q1303842001ND
2013-10-16Q1308913001ND
2013-10-16Q1308913003ND
2013-10-16Q1308913005ND
2013-10-16Q1308913007ND
2013-10-16Q1308913009ND
2014-01-22Q1401700001ND
2014-02-18AC43245ND
2015-06-22AC96846ND
2016-11-14AD57799ND
2017-02-21AD71310ND
2017-04-20AD80430ND
2018-02-22AE15061ND
2019-05-09AE65719ND