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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

Cottonwood Mutual

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

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015ND30ND
2016ND20ND
2017N/A00N/A
2018ND50ND
2019ND20ND

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 Result
2015-02-11ND
2015-02-11ND
2015-07-13ND
2016-08-03ND
2016-08-03ND
2018-02-07ND
2018-02-07ND
2018-03-15ND
2018-03-22ND
2018-07-18ND
2019-07-10ND
2019-07-10ND