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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

Santa Monica

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

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND10ND
2015ND30ND
2016ND10ND
2017ND10ND
2018ND30ND
2019ND10ND

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
2014-08-259590-071-0950ND
2015-08-249590-071-1111ND
2015-08-249590-073-0802ND
2015-12-289590-073-0903ND
2016-08-229590-071-1018ND
2017-08-289590-071-0625ND
2018-08-069590-071-0632ND
2018-08-069590-073-0645ND
2018-11-059590-073-0919ND
2019-08-059590-071-1125ND