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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

Arizona Water Company - Overgaard

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

 

20

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
2014N/A00N/A
2015ND90ND
2016ND10ND
2017N/A00N/A
2018ND100ND
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
2015-05-195051552-05ND
2015-05-195051552-04ND
2015-05-195051552-03ND
2015-05-195051552-02ND
2015-05-195051552-01ND
2015-11-035110317-04ND
2015-11-035110317-03ND
2015-11-035110317-02ND
2015-12-075120637-01ND
2016-02-226022013-01ND
2018-05-2118E2216-05 SOCND
2018-05-2118E2216-04 SOCND
2018-05-2118E2216-03 SOCND
2018-05-2118E2216-02 SOCND
2018-05-2118E2216-01 SOCND
2018-10-1518J1761-04ND
2018-10-1518J1761-03ND
2018-10-1518J1761-02ND
2018-10-1518J1761-01ND
2018-11-0618K0612-01ND