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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

Crest Hill

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

MORE ABOUT THIS CONTAMINANT

 

21

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND100ND
2015N/A00N/A
2016N/A00N/A
2017ND90ND
2018ND10ND
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
2014-02-05SB40142-01_01ND
2014-02-05SB40140-01_01ND
2014-02-05SB40141-01_01ND
2014-02-05SB40143-01_01ND
2014-02-05SB40144-01_01ND
2014-06-05SF40228-01_01ND
2014-06-05SF40231-01_01ND
2014-06-05SF40229-01_01ND
2014-06-05SF40227-01_01ND
2014-06-05SF40225-01_01ND
2017-01-311702020-001BND
2017-01-311702020-010BND
2017-01-311702020-007BND
2017-01-311702020-004BND
2017-04-191704D33-004BND
2017-04-191704D33-007BND
2017-04-191704D33-001BND
2017-04-191704D33-010BND
2017-12-281801130-001BND
2018-06-2618F1104-01_02ND
2019-12-269124547-01ND