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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

Peter Pitchess Honor Rancho Detention Center

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
2014N/A00N/A
2015ND60ND
2016N/A00N/A
2017ND10ND
2018ND50ND
2019ND40ND

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
2015-02-185442-003-1155ND
2015-02-185442-006-1215ND
2015-02-185442-016-1230ND
2015-05-055442-003-1250ND
2015-05-055442-006-1310ND
2015-05-055442-016-1330ND
2017-09-189590-016-0945ND
2018-07-169590-003-0800ND
2018-07-169590-006-0845ND
2018-08-279590-006-0915ND
2018-10-099590-003-0900ND
2018-10-099590-006-0930ND
2019-07-089590-016-0945ND
2019-09-039590-003-1030ND
2019-09-039590-006-0930ND
2019-12-169590-016-0830ND