Tex. Spec. Dist. Local Laws Code § 21.205

The district may prepare and adopt plans for and may purchase, construct, acquire, own, operate, maintain, repair, improve, and extend inside and outside district boundaries any works, improvements, waste disposal, treatment, and other facilities, plants, pipelines, equipment, and appliances necessary to collect, transport, process, dispose of, and control domestic, industrial, and communal waterborne and solid waste in the district.