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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

Weber Basin Water Conservancy District - Central

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

 

9

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
2015ND10ND
2016ND20ND
2017N/A00N/A
2018ND40ND
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
2015-09-29ND
2016-07-05ND
2016-11-08ND
2018-08-23ND
2018-08-23ND
2018-10-12ND
2018-10-12ND
2019-08-08ND
2019-11-14ND