A district shall be created:
(1) to purchase, own, hold, lease, and otherwise acquire sources of water supply;
(2) to build, operate, and maintain facilities for the transportation of water;
(3) to sell water to cities, to political subdivisions of this state, to water supply corporations, to private business entities, and to individuals;
(4) to purchase, own, hold, lease, and otherwise acquire equipment and mechanisms necessary for sanitary sewer and wastewater treatment;
(5) to build, operate, and maintain facilities for sanitary sewer and wastewater treatment;
(6) to transport and treat sanitary sewer and wastewater effluent of cities and political subdivisions of this state and for private business entities or individuals;
(7) to purchase, own, hold, lease, and otherwise acquire equipment and mechanisms for the drainage of storm water and floodwater; and
(8) for the purposes outlined in Section 54.012.