(a) The electors of the district shall vote to approve every contract involving the payment of construction charges to the United States. The provisions of this chapter relating to the election to approve the validation of district bonds shall be followed, including the prosecution of an action in court to determine the validity of the contract.
(b) The notice of election shall state the maximum amount, exclusive of operation and maintenance charges, water rental charges, interest, and penalties, payable by the district to the United States under the contract.
(c) The ballot shall be printed to provide for voting for or against the proposition: "The contract with the United States and levy of taxes to make payments under the contract." This is the only proposition which may appear on the ballot.