Wells are usually priced by the foot for both the drilling and the casing. The pumping equipment is priced separately and depends on the depth of the well. Pumps are defined by horsepower and gallons per minute. They are sized to match the depth of the well and the demand the homeowner will place on the system. The need for water treatment equipment required to bring the water to the desired quality depends on the quality of the water found when the well is drilled. Watson Company can give you an estimate for your well. Remember a low bid for a well is not necessarily a good deal if the contractor cuts corners or does not construct the well properly or drills the well unnecessarily deep.