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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

Purdue University Water Works

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

MORE ABOUT THIS CONTAMINANT

 

30

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014N/A00N/A
2015ND180ND
2016N/A00N/A
2017N/A00N/A
2018ND120ND
2019N/A00N/A

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
2015-06-10540591RS28-1502ND
2015-06-10540590RS28-1502ND
2015-06-10540589RS28-1502ND
2015-06-10540588RS28-1502ND
2015-06-10540587RS28-1502ND
2015-06-10540586RS28-1502ND
2015-09-30549695RS28-1503ND
2015-09-30549696RS28-1503ND
2015-09-30549697RS28-1503ND
2015-09-30549698RS28-1503ND
2015-09-30549699RS28-1503ND
2015-09-30549964RS28-1503ND
2015-10-27552003RS525-1504ND
2015-10-27552006RS525-1504ND
2015-10-27552005RS525-1504ND
2015-10-27552004RS525-1504ND
2015-10-27552002RS525-1504ND
2015-10-27552007RS525-1504ND
2018-06-19638810ND
2018-06-19638809ND
2018-06-19638808ND
2018-06-19638807ND
2018-06-19638806ND
2018-06-19238805ND
2018-08-13643444ND
2018-08-13643443ND
2018-08-13643442ND
2018-08-13643441ND
2018-08-13643440ND
2018-08-13643439ND