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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

Lower Rio Grande Public Water Works Authority

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

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND80ND
2015N/A00N/A
2016N/A00N/A
2017ND70ND
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
2014-02-251402B03-004AND
2014-02-251402B04-005AND
2014-02-251402A91-005AND
2014-02-251402A95-005AND
2014-02-251402A93-005AND
2014-02-251402A94-005AND
2014-02-251402A96-005AND
2014-03-251403B77-001AND
2017-09-131709759-005ND
2017-09-131709758-005ND
2017-09-131709757-005ND
2017-09-131709756-005ND
2017-09-131709777-005ND
2017-09-131709755-005ND
2017-09-131709754-005ND