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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

Rehoboth District

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

MORE ABOUT THIS CONTAMINANT

 

29

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND20ND
2015ND110ND
2016N/A00N/A
2017ND20ND
2018ND120ND
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
2014-04-2335135573004ND
2014-07-2835147904005ND
2015-05-2035189675005ND
2015-05-2035189672005ND
2015-05-2035189670005ND
2015-05-2035189668005ND
2015-08-1035202984005ND
2015-08-1035202979006ND
2015-08-2635205121005ND
2015-08-2635205113005ND
2015-08-2635205112006ND
2015-08-2635205107005ND
2015-10-2035213069006ND
2017-04-202224698004ND
2017-09-272265849001ND
2018-04-192310468005ND
2018-04-192310461003ND
2018-04-252311949002ND
2018-04-252311946002ND
2018-04-252311945004ND
2018-06-072319770003ND
2018-10-014076150ND
2018-10-014076149ND
2018-10-024079407ND
2018-10-024079406ND
2018-10-034079393ND
2018-10-034079392ND
2019-05-284311332ND
2019-10-224464908ND