Methodology was developed for selecting the optimum size, configuration, and timing of a wastewater reclamation project jointly or singly undertaken by a waste disposal and water supply agency. A separate procedure was developed for allocating project costs between disposal and supply functions, and, if the project includes recreation, to that function as well. The optimization and cost allocation procedures are most completely developed for reliable, direct use reclamation projects producing a non-potable supply. Guidelines are included for analyzing interruptible projects and those producing potable supplies. A basic consideration in the analysis of economic feasibility of wastewater reclamation projects must be an evaluation of the costs borne by consumers of inferior quality water. The report also discusses quantity and quality requirements for various uses of reclaimed water. An extensive bibliography is included.