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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

Monterey Park Water Department

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

MORE ABOUT THIS CONTAMINANT

 

38

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015ND40ND
2016ND40ND
2017ND40ND
2018ND40ND
2019ND180ND

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
2014-01-153761-081-0915ND
2014-01-153761-038-0725ND
2014-01-153761-013-0820ND
2014-01-153761-010-0810ND
2015-01-133761-081-1226ND
2015-01-133761-038-1155ND
2015-01-133761-013-1205ND
2015-01-133761-010-1145ND
2016-01-043761-081-1130ND
2016-01-043761-038-1010ND
2016-01-043761-013-1020ND
2016-01-043761-010-1000ND
2017-01-109590-010-1035ND
2017-01-109590-038-0930ND
2017-01-109590-081-0835ND
2017-01-109590-013-0950ND
2018-02-079590-013-1130ND
2018-02-079590-038-1030ND
2018-02-079590-081-0815ND
2018-02-079590-010-1100ND
2019-01-099590-081-0900ND
2019-01-099590-010-1100ND
2019-01-099590-038-1130ND
2019-02-289588-001-1130ND
2019-02-289588-006-1240ND
2019-02-289588-002-1115ND
2019-02-289588-011-1145ND
2019-02-289588-010-1220ND
2019-02-289588-038-1205ND
2019-05-209588-013-0945ND
2019-05-209588-038-1020ND
2019-05-209588-011-0920ND
2019-05-209588-010-1035ND
2019-05-209588-006-0940ND
2019-05-209588-002-0905ND
2019-05-209588-001-0850ND
2019-05-219590-013-0950ND
2019-08-279588-013-0935ND