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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

La Crosse Waterworks

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

 

11

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
2015N/A00N/A
2016N/A00N/A
2017ND110ND
2018N/A00N/A
2019N/A00N/A

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
2017-03-0817C0300-01ND
2017-03-1517C0533-01ND
2017-03-1617C0605-01ND
2017-06-2117F0857-01ND
2017-06-2117F0857-03ND
2017-06-2117F0857-02ND
2017-06-2217F0900-01ND
2017-06-2617F0985-01ND
2017-06-2817F1145-02ND
2017-06-2817F1145-01ND
2017-08-2117H0886-01ND