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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

Intracoastal Water System West

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

MORE ABOUT THIS CONTAMINANT

 

36

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015ND80ND
2016ND40ND
2017ND60ND
2018ND100ND
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
2014-03-10AD89567ND
2014-03-10AD89567ND
2014-11-03AD99370ND
2014-11-03AD99370ND
2015-03-2335181102002ND
2015-03-2335181102002ND
2015-10-1435212298003ND
2015-10-1435212298002ND
2015-10-1435212298003ND
2015-10-1435212298002ND
2015-10-1935213246002ND
2015-10-1935213246002ND
2016-02-1535230016002ND
2016-02-1535230016002ND
2016-12-1335283969006ND
2016-12-1335283969006ND
2017-02-2735297619004ND
2017-02-2735297619004ND
2017-04-1935307904005ND
2017-04-1935307904005ND
2017-10-3035345279001ND
2017-10-3035345279001ND
2018-03-2735382404001ND
2018-03-2735382404001ND
2018-07-0935403785003ND
2018-07-0935403785003ND
2018-07-0935403785002ND
2018-07-0935403785001ND
2018-07-0935403785001ND
2018-07-0935403785002ND
2018-08-2135412901001ND
2018-08-2135412901001ND
2019-01-1635442897001ND
2019-01-1635442897001ND
2019-08-2735493982002ND
2019-08-2735493982002ND