Tex. Water Code § 59.023

The district may issue bonds for the purpose of purchasing, constructing, acquiring, owning, operating, repairing, improving, or extending any district works, improvements, facilities, plants, equipment, and appliances needed to accomplish the purposes of the district, including works, improvements, facilities, plants, equipment, and appliances needed to provide a waterworks system, sanitary sewer system, storm sewer system, solid waste disposal system, and parks and recreational facilities. Prior to issuing bonds or other obligations, a confirmation election must be held in accordance with Chapter 49, and a majority of voters must approve the establishment of the district.