(a) The district may enter into a contract to allow a political subdivision to provide retail water or sewer service in the district. The contract may contain terms the board considers desirable, fair, and advantageous to the district.(b) The contract may provide that the district will construct or acquire and convey or lease to the political subdivision a water supply or treatment system, a water distribution system, or a sanitary sewage collection or treatment system, as necessary to provide water or sewer service in the district.(c) The district may use bond proceeds or other available district money to pay for its obligations and for services and facilities provided under the contract.(d) If the contract requires the district to make payments from taxes other than operation and maintenance taxes, the contract is subject to Section 49.108, Water Code. Added by Acts 2005, 79th Leg., Ch. 774 (H.B. 3534), Sec. 1, eff. September 1, 2005.