(1) The board of commissioners herein mentioned shall have control of the construction of the improvements in their districts. They may make purchases and contracts in accordance with Section 31-7-13.
(2) The chancery court or chancellor in vacation may remove any commissioner and appoint his successor, upon proof of incompetency or neglect of duty; but the charge shall be in writing, and such commissioner shall have the right to be heard in his defense and to appeal to the circuit court.