Harris County, the City of Houston, or another political subdivision of this state, without further authorization, may contract with the district to implement a project of the district or assist the district in providing a service authorized under this chapter. A contract under this section may:(1) be for a period on which the parties agree;(2) include terms on which the parties agree;(3) be payable from taxes or any other source of revenue that may be available for that project or service; and(4) provide terms under which taxes or other revenue collected at a district project or from a person using or purchasing a commodity or service at a district project may be paid or rebated to the district. Acts 2003, 78th Leg., ch. 1277, Sec. 1, eff. April 1, 2005.