(a) The board may provide for the payment of the principal of and interest on the bonds by one or more of the following methods:
(1) imposition and collection of ad valorem taxes;
(2) adoption of a plan of taxation authorized by Sections 51.502-51.506, Water Code, as provided by those sections; or
(3) pledging all or part of the fees under Section 441.197.
(b) In this chapter, a reference to ad valorem taxes includes a reference to any other tax the board imposes as provided by this chapter.