Chari from Fishers, In writes
If Bonide Stump Out Stump & Vine Killer is applied directly to the plant per the product label instructions, it should not contaminate your well water. It is absorbed and metabolized through the plant so unless its used off label to ground area near the well or was mistakenly poured in the well, it is not harmful. Bonide Stump Out Stump & Vine Killer is not labeled for cattails. Diquat Water Weed and Landscape Herbicide would be a better option as it is an aquatic herbicide labeled for cattails.
Answer last updated on: 06/30/2022
