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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

Arizona Water Company - Sierra Vista

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
2015N/A00N/A
2016ND140ND
2017N/A00N/A
2018ND140ND
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
2016-04-04201604050484SND
2016-04-04201604050483SND
2016-04-04201604050482SND
2016-04-04201604050481SND
2016-04-04201604050480SND
2016-04-04201604050479SND
2016-04-04201604050478SND
2016-07-20201607210426SND
2016-07-20201607210425SND
2016-07-20201607210424SND
2016-07-20201607210423SND
2016-07-20201607210422SND
2016-07-20201607210421SND
2016-11-14201611150530SND
2018-01-23201801240110SND
2018-01-23201801240109SND
2018-01-23201801240108SND
2018-01-23201801240107SND
2018-01-23201801240106SND
2018-01-23201801240105SND
2018-01-23201801240104SND
2018-07-25201807250635SND
2018-07-25201807250647SND
2018-07-25201807250646SND
2018-07-25201807250645SND
2018-07-25201807250644SND
2018-07-25201807250643SND
2018-07-25201807250636SND