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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

Maryville

Alachlor is a widely used agricultural herbicide. It causes cancer in laboratory animals and may be carcinogenic to people.

 

25

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015ND40ND
2016ND50ND
2017ND40ND
2018ND40ND
2019ND40ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 2 ppb

The legal limit for alachlor, established in 1991, was based on toxicity studies in laboratory animals conducted in the 1980s.

ppb = parts per billion

All test results

Date Lab ID Result
2014-02-11AC18931ND
2014-05-15AC23684ND
2014-08-11AC32468ND
2014-11-17AC38681ND
2015-02-09AC42497ND
2015-05-13AC47054ND
2015-08-19AC58025ND
2015-11-16AC63200ND
2016-02-17AC66873ND
2016-05-08AC72555ND
2016-06-06AC75673ND
2016-09-11AC82234ND
2016-11-14AC87736ND
2017-02-06AC91323ND
2017-05-08AC96265ND
2017-08-21AD04039ND
2017-11-20AD09850ND
2018-02-20AD14803ND
2018-05-09AD20806ND
2018-08-06AD31580ND
2018-11-07AD36089ND
2019-02-26AD39891ND
2019-05-21AD47773ND
2019-08-13AD54364ND
2019-11-06AD58389ND