Va. Code § 21-157
In and for each district, a board or commission is hereby created to manage and control the functions, affairs and property of the corporation and to exercise all of the rights, powers and authority and perform all of the duties conferred or imposed upon the corporation. Except as a special act creating the district shall otherwise provide, such board or commission shall consist of five members, residents of the district, appointed by the Governor. Except as a special act creating the district shall otherwise provide, in making the original appointments, one of the members shall be appointed for a term of one year, one for a term of two years, one for a term of three years and two for terms of four years each; subsequent appointments shall be made for a term of four years, except appointments to fill vacancies which shall be for the unexpired terms.
Va. Code § 21-157