As required by Section 208 of the Federal Water Pollution Control Act Amendments of 1972 (P.L. 92-500), Houston-Galveston Area Council has been designated by the Governor of the State of Texas as the planning agency to develop a comprehensive areawide waste treatment management plan for the greater Houston area. Data in this catalog was obtained through a series of interviews with selected local entities as well as a number of State, regional, and federal agencies. Basic managerial, institutional, and regulatory data were collected using a standard interview guide. Two versions of this guide were used; one for state and federal agencies, and the other for regional, county, municipal, and local districts in the H-GAC designated area. The report presents data according to geographical jurisdiction: federal, state, regional, municipal, county and water district. Within each level of agency, the discussion of individual agencies is organized as to agency role, organization and responsibilities and specific programs.