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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

Westside Rural Water Supply Corporation

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
2013N/A00N/A
2014ND20ND
2015ND10ND
2016ND40ND
2017ND40ND
2018ND10ND
2019ND30ND

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
2014-05-06Q1414652008ND
2014-09-30Q1449503001ND
2015-07-14Q1526983007ND
2016-11-07Q1647711015ND
2016-11-07Q1647711018ND
2016-11-07Q1647711002ND
2016-11-07Q1647711023ND
2017-01-17Q1701920014ND
2017-01-17Q1701920001ND
2017-04-19Q1716217003ND
2017-08-08Q1733371003ND
2018-10-30Q1843596009ND
2019-05-07Q1920849010ND
2019-05-07Q1920849011ND
2019-05-07Q1920849001ND