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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

Wahiawa

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

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND50ND
2015N/A00N/A
2016N/A00N/A
2017ND60ND
2018ND30ND
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
2014-02-03201402050209ND
2014-02-11201402140314ND
2014-08-04201408060611ND
2014-10-20201410220437ND
2014-10-20201410220438ND
2017-01-30ND
2017-01-30ND
2017-03-20ND
2017-03-20ND
2017-10-31ND
2017-11-20ND
2018-04-18201804200571ND
2018-07-11201807140225ND
2018-08-15201808170535ND
2019-05-01201903280505ND