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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

Golden State Water Company (GSWC) - Southwest

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

 

17

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014N/A00N/A
2015ND10ND
2016ND50ND
2017ND110ND
2018N/A00N/A
2019N/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
2015-12-169590-038-0920ND
2016-04-049590-011-1147ND
2016-05-052706-064-1058ND
2016-07-072706-064-0725ND
2016-07-212706-011-0830ND
2016-10-252706-064-1047ND
2017-02-239590-073-0924ND
2017-03-239590-011-1240ND
2017-03-299590-039-1235ND
2017-03-299590-045-1145ND
2017-03-309590-038-0725ND
2017-04-139590-064-0754ND
2017-06-069590-011-1036ND
2017-06-219590-073-1210ND
2017-07-189590-064-0956ND
2017-07-319590-073-1415ND
2017-10-099590-073-0803ND