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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

City of San Jose - EVG/EDV/COY

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

MORE ABOUT THIS CONTAMINANT

 

30

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
2014ND160ND
2015N/A00N/A
2016N/A00N/A
2017ND130ND
2018N/A00N/A
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
2014-02-189590-012-0902ND
2014-02-259590-006-0859ND
2014-02-259590-005-0948ND
2014-03-119590-012-1000ND
2014-03-271610-004-0900ND
2014-03-271610-003-0810ND
2014-03-271610-001-1130ND
2014-03-271610-002-1000ND
2014-04-081610-012-0906ND
2014-04-089590-012-0904ND
2014-04-151610-013-0845ND
2014-04-151610-011-0930ND
2014-08-051610-007-0920ND
2014-08-261610-013-0918ND
2014-08-261610-012-1008ND
2014-08-261610-011-1125ND
2017-01-171610-004-0925ND
2017-01-171610-002-0835ND
2017-01-171610-001-1036ND
2017-01-311610-003-0819ND
2017-04-111610-004-0850ND
2017-04-111610-003-0755ND
2017-04-111610-002-0950ND
2017-04-111610-001-1125ND
2017-05-025867-011-1002ND
2017-08-011610-012-0950ND
2017-08-011610-011-1030ND
2017-09-261610-013-1030ND
2017-12-191610-013-0920ND
2019-05-141610-012-0949ND