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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

Pendleton Water Association

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

MORE ABOUT THIS CONTAMINANT

 

22

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
2017ND40ND
2018ND20ND
2019ND40ND

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
2014-04-07AD90490ND
2014-04-07AD90490ND
2014-09-05AD96599ND
2014-09-05AD96599ND
2015-03-0235177846003ND
2015-03-0235177846003ND
2015-10-0535210878002ND
2015-10-0535210878002ND
2016-04-1135239164002ND
2016-04-1135239164002ND
2016-11-2135279123008ND
2016-11-2135279123008ND
2017-04-0435304846003ND
2017-04-0435304846003ND
2017-10-1635343111001ND
2017-10-1635343111001ND
2018-08-0635409599001ND
2018-08-0635409599001ND
2019-03-1235454721001ND
2019-03-1235454721001ND
2019-08-0735490078001ND
2019-08-0735490078001ND