(a) The district may contract with municipalities and others to supply water to those entities.
(b) The district may contract with a municipality for the rental or leasing of or for the operation of the water production, water supply, and water supply facilities of the municipality.
(c) The district may contract with the City of Decatur for the operation of the district's facilities by the city.
(d) The contract may be on terms and for the time agreed to by the parties.
(e) The contract may provide that it will continue in effect until bonds specified in it and refunding bonds issued in lieu of the bonds are paid.