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EWG's Tap Water Database — 2019 UPDATE

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Alachlor (Lasso)

City of Lewiston

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

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND40ND
2013ND30ND
2014N/A00N/A
2015ND60ND
2016ND10ND
2017ND10ND

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
2012-04-03S59257ND
2012-10-24S63631ND
2012-10-24S63632ND
2012-10-24S63633ND
2013-02-27S130228026-001ND
2013-08-21S130822058-005ND
2013-08-21S130822058-001ND
2015-01-21S2150122025-001ND
2015-07-22S150723044-001ND
2015-07-22S150723044-002ND
2015-07-22S150723044-003ND
2015-08-19S150819036-001ND
2015-08-19S150819036-002ND
2016-05-16S160518056-001ND
2017-03-28S170328050-001ND