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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

St Charles Water District 1 East Bank

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

MORE ABOUT THIS CONTAMINANT

 

26

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015ND40ND
2016ND40ND
2017ND20ND
2018ND40ND
2019ND80ND

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
2014-01-22AD88495ND
2014-01-22AD88495ND
2014-10-13AD98510ND
2014-10-13AD98510ND
2015-04-0635182606002ND
2015-04-0635182606002ND
2015-10-0835211172001ND
2015-10-0835211172001ND
2016-03-0135232149004ND
2016-03-0135232149004ND
2016-09-2035266509006ND
2016-09-2035266509006ND
2017-01-2535291206005ND
2017-01-2535291206005ND
2018-05-1435392326001ND
2018-05-1435392326001ND
2018-07-1735405500001ND
2018-07-1735405500001ND
2019-01-2235444038001ND
2019-01-2235444037001ND
2019-01-2235444037001ND
2019-01-2235444038001ND
2019-07-2535485229001ND
2019-07-2535485229002ND
2019-07-2535485229001ND
2019-07-2535485229002ND