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EWG's Tap Water Database — 2019 UPDATE

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Alachlor (Lasso)

Los Angeles Department of Water and Power

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

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013ND10ND
2014ND70ND
2015ND20ND
2016N/A00N/A
2017ND80ND

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
2013-11-191200-133-0800ND
2014-05-089588-133-0815ND
2014-05-081200-133-0815ND
2014-05-089588-011-0930ND
2014-05-081200-011-0930ND
2014-08-071200-011-1120ND
2014-08-209588-133-0900ND
2014-08-201200-133-0900ND
2015-06-171200-011-1205ND
2015-06-171200-133-0630ND
2017-02-219588-133-1210ND
2017-02-219588-011-1140ND
2017-02-271200-011-1030ND
2017-02-281200-133-1105ND
2017-05-099588-011-0940ND
2017-05-091200-011-0940ND
2017-05-171200-133-0941ND
2017-05-179588-133-0941ND