Counties are authorized to establish, construct, install, acquire and maintain urban-type public facilities for utility services such as water and sewer, and may manage such utility services through a board of public utilities. T.C.A. § 5-16-102. If such a board is established by resolution of the county legislative body, it shall consist of either three or five members, except in Anderson County where the board may have seven members. The county mayor appoints members of this board subject to confirmation by the county legislative body. The terms are for three years after initial appointments for one, two and three years to create staggered terms. The members of this board serve without compensation except for reimbursement for actual expenses incurred in the performance of their duties except in a few counties where this is authorized by narrow population class exceptions. T.C.A. § 5-16-103.