Water reuse planning models: extensions and applications.

A water reuse planing model has been developed for determining the optimum allocation of water and reuse of wastewater on a regional basis for multiperiod planning that minimizes the overall cost of water supply. Both water quantity and water quality parameters of various sources of flows are considered. Wastewater from all use sectors, along with freshwater, can be considered as candidate sources or origins of water. Both single-period and multiperiod models are applied to a region including San Antonio, Texas.-from Authors