For the purpose of carrying out the provisions of this article, to assist in the keeping of the tax books, the collection of taxes, the remitting of funds to pay maturing bonds and coupons and to be of such other service in the general management of the affairs of the district as may be determined, the board of water management commissioners shall have authority to appoint a fiscal agent and to define the duties and fix the compensation of said fiscal agent.
Ala. Code § 9-9-17 (1975)