This pamphlet gives advice to any person wishing to employ a contractor to drill, or make repairs to a water well. Drilling a well can be complex and expensive, and it is important to make the correct decision about whether to drill and if so, where to site the well and how to construct it. This must be based on the best available information concerning the expected well yield and water quality. proposed use of the water, initial and continuing costs, and whether or not there are any legal constraints on the amount of water that can be extracted must also be considered.