The district may provide, design, construct, acquire, improve, relocate, operate, maintain, or finance an improvement project or service, including water, wastewater, drainage, and roadway projects or services, using any money available to the district, or contract with a governmental or private entity and reimburse that entity for the provision, design, construction, acquisition, improvement, relocation, operation, maintenance, or financing of an improvement project, service, or cost, for the provision of credit enhancement, or for any cost of operating or maintaining the district or the issuance of district obligations authorized under this chapter, Chapter 372 or 375, Local Government Code, or Chapter 49 or 54, Water Code.