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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

Romeoville

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

MORE ABOUT THIS CONTAMINANT

 

28

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
2015ND130ND
2016N/A00N/A
2017ND20ND
2018ND120ND
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
2015-02-231502D88-004BND
2015-02-231502D88-007BND
2015-02-231502D88-010BND
2015-02-231502D88-013BND
2015-02-231502D88-016BND
2015-02-231502D88-001BND
2015-05-271505L02-001BND
2015-05-271505L02-004BND
2015-05-271505L02-007BND
2015-05-271505L02-010BND
2015-05-271505L02-013BND
2015-05-271505L02-016BND
2015-07-091507759-001BND
2017-05-031705343-001BND
2017-07-191707E64-001BND
2018-01-291801H09-001BND
2018-01-291801H09-004BND
2018-01-291801H09-007BND
2018-01-291801H09-010BND
2018-01-291801H09-013BND
2018-01-291801H09-016BND
2018-04-191804E46-001BND
2018-04-191804E46-004BND
2018-04-191804E46-007BND
2018-04-191804E46-010BND
2018-04-191804E46-013BND
2018-05-171805E34-001AND
2019-12-091911G96-001_SOCND