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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

Woden Water Supply Corporation

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

MORE ABOUT THIS CONTAMINANT

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND10ND
2015ND60ND
2016ND30ND
2017ND20ND
2018ND60ND
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 Lab ID Result
2014-06-09Q1419948028ND
2015-06-25Q1524222003ND
2015-08-12Q1531879004ND
2015-10-08Q1539627012ND
2015-10-08Q1539627011ND
2015-10-08Q1539627010ND
2015-10-08Q1539627009ND
2016-06-21Q1625030002ND
2016-06-21Q1625030001ND
2016-09-26Q1640189002ND
2017-06-15Q1725076002ND
2017-09-14Q1743897017ND
2018-03-20Q1811091001ND
2018-03-20Q1811091006ND
2018-03-20Q1811091020ND
2018-03-20Q1811091005ND
2018-03-20Q1811091019ND
2018-03-20Q1811091004ND
2019-01-16Q1902343014ND
2019-10-08Q1972051003ND