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EWG's Tap Water Database — 2019 UPDATE

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Alachlor (Lasso)

La Habra Heights County Water District

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

 

16

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND70ND
2013ND20ND
2014N/A00N/A
2015ND50ND
2016ND20ND
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
2012-03-292706-009-0855ND
2012-03-292706-010-0920ND
2012-04-172706-009-1308ND
2012-04-172706-010-1335ND
2012-07-242706-009-1120ND
2012-07-242706-010-1145ND
2012-08-132706-005-1045ND
2013-02-282706-005-1105ND
2013-04-252706-005-1120ND
2015-04-109588-009-0909ND
2015-04-109588-010-0920ND
2015-07-289588-009-0935ND
2015-07-289588-010-1057ND
2015-12-169588-006-0955ND
2016-03-219588-005-0920ND
2016-06-039588-005-1005ND