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EWG's Tap Water Database — 2021 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.

MORE ABOUT THIS CONTAMINANT

 

61

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
2016ND200ND
2017N/A00N/A
2018ND30ND
2019ND380ND

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
2016-02-09201602100057SND
2016-02-09201602100056SND
2016-02-09201602100055SND
2016-02-10201602110035SND
2016-02-10201602110034SND
2016-02-10201602110033SND
2016-02-10201602110032SND
2016-02-10201602110031SND
2016-02-10201602110030SND
2016-02-10201602110029SND
2016-08-03201608040050SND
2016-08-03201608040051SND
2016-08-03201608040052SND
2016-08-03201608040054SND
2016-08-03201608040053SND
2016-08-04201608050124SND
2016-08-04201608050123SND
2016-08-04201608050122SND
2016-08-04201608050121SND
2016-08-04201608050120SND
2018-05-09201805100262SND
2018-07-25201807250680SND
2018-10-11201810120161SND
2019-02-05201902060078SND
2019-02-05201902060085SND
2019-02-05201902060084SND
2019-02-05201902060083SND
2019-02-05201902060082SND
2019-02-05201902060081SND
2019-02-05201902060080SND
2019-02-05201902060079SND
2019-02-06201902070484SND
2019-02-06201902070483SND
2019-02-06201902070482SND
2019-02-06201902070481SND
2019-02-06201902070480SND
2019-02-06201902070479SND
2019-02-06201902070478SND
2019-02-06201902070477SND
2019-05-07201905080060SND
2019-05-07201905080058SND
2019-05-07201905080059SND
2019-05-07201905080061SND
2019-05-07201905080062SND
2019-05-07201905080064SND
2019-05-07201905080066SND
2019-05-07201905080067SND
2019-05-07201905080063SND
2019-05-08201905090396SND
2019-05-08201905090387SND
2019-05-08201905090394SND
2019-05-08201905090395SND
2019-05-08201905090397SND
2019-05-08201905090398SND
2019-05-08201905090399SND
2019-06-1919F2188-01ND
2019-08-2819H3349-01ND
2019-08-2819H3342-01ND
2019-09-1619I1769-05ND
2019-11-2019K2301-01ND
2019-11-2019K2302-01ND