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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

Fcwwd #41/shaver Lake

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

MORE ABOUT THIS CONTAMINANT

 

34

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
2015ND170ND
2016ND120ND
2017ND10ND
2018N/A00N/A
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
2015-02-175802-040-0910ND
2015-06-045802-001-0800ND
2015-06-045802-005-0930ND
2015-06-045802-004-0900ND
2015-06-175802-062-0930ND
2015-06-175802-033-0850ND
2015-06-175802-034-1030ND
2015-06-185802-009-1030ND
2015-06-245802-011-1000ND
2015-06-245802-012-0930ND
2015-06-255802-008-0400ND
2015-06-255802-014-0945ND
2015-06-255802-015-1030ND
2015-06-305802-006-0830ND
2015-06-305802-035-0930ND
2015-07-015802-042-0930ND
2015-07-015802-036-0830ND
2016-07-215806-056-0900ND
2016-07-215806-057-0845ND
2016-07-215806-058-0830ND
2016-08-175806-062-0845ND
2016-08-175806-065-1015ND
2016-08-175806-059-0930ND
2016-08-245806-044-1030ND
2016-08-245806-046-0930ND
2016-09-272706-038-1015ND
2016-09-272706-041-1115ND
2016-10-122706-040-1030ND
2016-11-152706-043-1000ND
2017-05-025802-002-1100ND
2019-01-155802-014-1220ND
2019-03-285802-044-1210ND
2019-03-285802-037-1200ND
2019-06-265802-066-1230ND