No person, partnership, association, corporation, or limited liability company shall engage in the business of constructing a water well in this state unless at all times a certified water well contractor, who is responsible for the proper construction or alteration thereof, is in charge; provided, however, that nothing in this chapter shall be construed so as to prohibit any person, partnership, association, corporation, or limited liability company from constructing any water well on the person's or entity's own premises for the person's or entity's own use.
N.D.C.C. § 43-35-18