Know Your Environment. Protect Your Health.

Alachlor (Lasso)

Kennett Square Municipal Water Works

NOTE: Kennett Square Municipal Water Works purchases water from Chester Water Authority which is required to test for alachlor (lasso). Sample information shown below was taken by Chester Water Authority.

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

 

7

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019N/A00N/A
2020ND40ND
2021N/A00N/A
2022N/A00N/A
2023ND40ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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

NOTE: Kennett Square Municipal Water Works purchases water from Chester Water Authority which is required to test for alachlor (lasso). Sample information shown below was taken by Chester Water Authority.

Date Lab ID Result
2018-04-102308353001ND
2020-02-0321663770.00ND
2020-04-0322019215.00ND
2020-07-0122603907.00ND
2023-05-1028896898.00ND
2023-07-1229299112.00ND
2023-11-1530068591.00ND