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EWG's Tap Water Database — 2019 UPDATE

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Alachlor (Lasso)

Prescott Valley WD Upper

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

 

36

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013ND140ND
2014N/A00N/A
2015N/A00N/A
2016ND200ND
2017N/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
2012-03-15201203160214SND
2012-07-25201207260390SND
2013-02-14201302150323SND
2013-02-14201302150325SND
2013-02-14201302150327SND
2013-02-14201302150329SND
2013-02-14201302150330SND
2013-02-14201302150331SND
2013-02-14201302150332SND
2013-07-25201307250257SND
2013-07-25201307250256SND
2013-07-25201307250255SND
2013-07-25201307250254SND
2013-07-25201307250253SND
2013-07-25201307250252SND
2013-07-25201307250251SND
2016-02-09201602100056SND
2016-02-09201602100057SND
2016-02-09201602100055SND
2016-02-10201602110035SND
2016-02-10201602110034SND
2016-02-10201602110033SND
2016-02-10201602110032SND
2016-02-10201602110031SND
2016-02-10201602110030SND
2016-02-10201602110029SND
2016-08-03201608040054SND
2016-08-03201608040050SND
2016-08-03201608040051SND
2016-08-03201608040052SND
2016-08-03201608040053SND
2016-08-04201608050120SND
2016-08-04201608050124SND
2016-08-04201608050123SND
2016-08-04201608050122SND
2016-08-04201608050121SND