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EWG's Tap Water Database — 2019 UPDATE

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Metolachlor

St. Louis City

Metolachlor is a herbicide applied on corn, soybeans and other crops. The EPA has classified metolachlor as a possible human carcinogen.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013ND20ND
2014ND20ND
20150.200 ppb42ND - 0.450 ppb
20160.970 ppb220.560 ppb - 1.38 ppb
20170.280 ppb63ND - 0.740 ppb

ppb = parts per billion

All test results

Date Lab ID Result
2012-05-09AB71796ND
2012-05-09AB71797ND
2013-05-06AB97903ND
2013-05-06AB97904ND
2014-06-02AC23738ND
2014-06-02AC23739ND
2015-03-17AC44661ND
2015-03-17AC44660ND
2015-06-01AC471060.450 ppb
2015-06-01AC471070.350 ppb
2016-06-06AC758650.560 ppb
2016-06-06AC758641.38 ppb
2017-05-19AC98044ND
2017-05-19AC980450.350 ppb
2017-06-21AC990390.740 ppb
2017-06-21AC990380.590 ppb
2017-09-11AD07442ND
2017-09-11AD07443ND