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EWG's Tap Water Database — 2019 UPDATE

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Alachlor (Lasso)

San Antonio Water System Northeast

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

 

8

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND30ND
2013N/A00N/A
2014ND10ND
2015ND30ND
2016N/A00N/A
2017ND10ND

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
2012-05-211205665005ND
2012-05-211205665006ND
2012-05-211205665007ND
2014-09-02AC65490ND
2015-07-08AC98819ND
2015-07-08AC98818ND
2015-07-09AC99017ND
2017-12-13AE07732ND