(a) The district shall have a board of directors in which all powers of the district shall be vested and which shall consist of the number of members specified in the articles of incorporation, but not less than three nor more than 11. Members of the board shall be appointed by the appointing government. The articles of incorporation shall specify that the members of the board serve for staggered terms, with one-third, or as near to one-third as is practical, of the initial members serving for four years, with one-third, or as near to one-third as is practical, of the initial members to serve for five years, and with one-third, or as near to one-third as is practical, of the initial members to serve for six years. Thereafter, the successors to members of the board of directors shall serve for six-year terms. The proceedings of the appointing government by which members of the board are appointed shall specify the term for which the appointment is made. Upon the expiration of the term of office of any member of the board, the person whose term shall have expired shall remain a member of the board until his or her successor shall have been duly appointed by the appointing government. Members of the board need not be owners, residents, electors, or taxpayers of the appointing government or the state.
(b) No vacancy in the membership of the board of directors or the voluntary disqualification or abstention of any member thereof shall impair the right of a quorum to exercise all of the powers and duties of the board.