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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

Rockton

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

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND60ND
2015ND30ND
2016N/A00N/A
2017ND20ND
2018ND40ND
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
2014-01-084010934-02ND
2014-02-184022538-01ND
2014-04-154042933-01ND
2014-04-154042933-02ND
2014-09-174093294-01ND
2014-10-064101788-01ND
2015-01-195013100-01ND
2015-01-195013107-01ND
2015-04-065041661-01ND
2017-01-167012840-01ND
2017-06-057061427-01ND
2018-01-088011235-01RE1ND
2018-01-088011235-04RE1ND
2018-05-148052782-01ND
2018-05-148052782-02ND