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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

Pennsylvania American Water Pittsburgh

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
2014ND40ND
2015N/A00N/A
2016N/A00N/A
2017ND40ND
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
2014-04-1425353701ND
2014-04-1525353901ND
2014-07-0826127201ND
2014-07-0926126101ND
2017-04-0516016270ND
2017-04-1116016301ND
2017-07-1016489802ND
2017-07-1016489765ND