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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

Collegeville Trappe Joint Public Works Department

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

 

28

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND140ND
2015N/A00N/A
2016N/A00N/A
2017ND140ND
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
2014-05-0514041898-01ND
2014-05-0514041904-01ND
2014-05-0514041903-01ND
2014-05-0514041902-01ND
2014-05-0514041901-01ND
2014-05-0514041900-01ND
2014-05-0514041899-01ND
2014-07-211427971ND
2014-07-211427972ND
2014-07-211427973ND
2014-08-041431079ND
2014-08-041431080ND
2014-08-041431081ND
2014-08-041431082ND
2017-05-0116093091ND
2017-05-0116093063ND
2017-05-0116093035ND
2017-05-0116093007ND
2017-05-0116092979ND
2017-05-0116092951ND
2017-05-0116092923ND
2017-08-0116564154ND
2017-08-0116564184ND
2017-08-0116564214ND
2017-08-0116564124ND
2017-08-0116564244ND
2017-08-0116564281ND
2017-08-0116564101ND