Some wells provide more protection than others.
Even greater protection is gained when a concrete slurry is poured between the casing and bore hole. A concrete pad or grade sloping away from the casing will prevent runoff from entering the bore hole. Review all activities that occur near a well to determine their potential threat to groundwater. Recommended practices include restricting livestock access to the wellhead, controlling burrowing animals, avoiding manure or chemical storage near the wellhead and providing sufficient distance from dead animal pits and leach fields. Owners should follow correct closure procedures for an abandoned well to be sure it is properly sealed and poses no threat to groundwater.