Abstract:
This study focused on examining of the technical, financial and organizational performance of Hossana water supply system using performance indicators and to analyze the existing water distribution system using Water GEMS software in different scenario. The technical indicators indicates the situation of water supply coverage, water production, water consumption and unaccounted for water. Service quality indicators indicate the continuity of water supply, consequently the performance of the water supply system. Financial indicators mainly indicate the efficiency of revenue collection. Finally, personal / human resource indicators show the capability of the staff utility regardless of the size of water supply system, which finally leads to quality of service delivery. Moreover, the Water GEMS can be used to identify the level of pressure in junctions and the level of velocity through pipe.
The data analysis were derived from primary and secondary data collection based on the Ministry of Water Irrigation and Electricity standard of Gross transformation plan II, World Bank (2011) and International Water Association (2006) performance indicators.
The analysis result of performance indicator show that the water supply coverage of the town is 64.4 %. The designed discharge from all sources for the town up to year 2020 was 125 l/s. However, the current discharge of water supply is 110 l/s and the current average daily per capita consumption of the town was 39.8 l/c/d or 66.3 % of per capita demand standard for the town. Hence, this result indicates that there is high gap between demand and supply. In addition, from seven years obtain data of production and consumption the average loss become 41.95% % with higher Unaccounted for water compared to the World Bank and American Water Work Association recommendations (less than 10%).
Furthermore, from model analysis result of current scenario; the 23 low and 7 high pressure junctions; 14 high and 39 low velocity pipes was modified by changing oversized and under sized pipe.
Therefore, the study recommended that the town Water Supply and Sewerage Enterprise should adopt improvement strategies for effective service delivery and coverage of water supply services to reduce unaccounted for water, increase revenue, capacitate technical staffs.
