This program is designed to simulate a water system including supply, storage, demand and treatment of sewage. It requires extensive preparatory work including simulation of stream flows and preparation of demand equations based on the analysis of data on past use by the use of a regression program.
Dworkin, Daniel, "Water Reuse Simulation Model Handbook. Prepared for the U.S. Army Engineer Institute for Water Resources" (1975). HRI Papers. Paper 3.