(a) In addition to the authority to issue general obligation bonds and revenue bonds under this subchapter, the board may provide for the security and payment of district bonds from a pledge of a combination of ad valorem taxes as authorized by Section 1083.202 and revenue and other sources as authorized by Section 1083.2045.
(b) Bonds, other than refunding bonds, that the board proposes to secure wholly or partly by an ad valorem tax must be approved at an election held in the district in accordance with Section 1083.203.