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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

Lahaina

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

MORE ABOUT THIS CONTAMINANT

 

25

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
2014ND80ND
2015ND10ND
2016ND30ND
2017ND100ND
2018ND20ND
2019ND10ND

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
2014-04-03201404080935ND
2014-04-03201404080617ND
2014-04-04201404080992ND
2014-04-11201404150350ND
2014-08-14201408190783ND
2014-08-14201408190815ND
2014-08-14201408190822ND
2014-08-14201408190830ND
2015-01-26201501280332ND
2016-02-22ND
2016-09-26ND
2016-11-28ND
2017-01-30ND
2017-01-30ND
2017-01-30ND
2017-01-30ND
2017-01-30ND
2017-09-07ND
2017-09-07ND
2017-09-07ND
2017-10-30ND
2017-10-30ND
2018-01-31201802020345ND
2018-03-22201803281100ND
2019-01-30201902010224ND