THE WATER SUPPLY AND DEMAND ANALYSIS IN THE CASE OF BONOSHA TOWN SHASHOGO WOREDA HADIYA ZONE SNNPR

Abstract

The main objectives of this study was to analyze water supply and demand of Bonosha town water distribution system. The supply part was assessed by collecting data of water source yield in town, which is located north of the town. The town has single water source, which has 4 l/s yield. To evaluate the demand of the town population, number of schools, churches, mosques, health institution, government office and restaurants are assessed. To analyze the existing water distribution system, the EPANET model was developed.The model used to identify the level of velocity through pipe and the zone of high and low pressure. The result of research shows that the non-domestic and domestic water supply coverage of the Bonosha town is 30%. This implies that there is high gap between demand and supply. In addition, from three years obtain data of production and consumption the average loss become 20.18%. Furthermore, the model analysis result shows that there significant problem of pressure and velocity in the system. The majority of junctions have negative pressure. This implies that user are not getting sufficient water. Moreover, the problem of Bonosha town water is insufficient yield, design problem and increasing population. The pump failure is one of major challenge in town