Agricultural and Biosystems Engineering
Why seal abandoned wells? Abandoned wells pose a threat to the safety of animals and humans, especially small children. Unsealed abandoned wells may act like drains for runoff, allowing contaminated water to flow directly into an aquifer. Sealing abandoned wells by filling them with clay or cement prevents accidents and preserves the drinking water resource.
Derickson, Russell, "Plugging Abandoned Wells" (2002). SDSU Extension Extra Archives. 17.