FEASIBILITY ASSESSMENT FOR DRILLING AND REHABILITATION OF WATER SUPPLY BOREHOLE SCHEME AT AWARO CAMPUS, AMBO UNIVERSITY
Groundwater is a crucial element to water systems and supplies of small to large communities worldwide. This study is based on review of relevant previous studies, primary data collected through comprehensive field survey in the project area Ambo University Institute of Technology, secondary data gathered from various offices at regional levels, and consultations with project affected communities, Administrators, key stakeholders, NGOs and relevant experts. The cause of failure of the bore well is assessed and parts of the scheme component that need maintenance, repair and replacement in addition to water quality condition is estimated in monetary value to undertake systematic cost benefit analysis to decide whether to drill new boreholes or rehabilitate existing sites. Document analysis, interviewing, group discussion and reconnaissance survey/observational approach is used to gather data and information. The Costs and benefits of borehole drilling and rehabilitation analysis was estimated. The total cost was estimated at US$ 31,282 in the borehole drilling and US$ 10,167 in the borehole rehabilitation. The total economic benefit was estimated to be US$ 140,385 for 20 years in the borehole drilling and US$ 28,513 for 10 years in the borehole rehabilitation. The cost-benefit ratio was 4.5 for borehole drilling and 2.8 for borehole rehabilitation. The output of this analysis revealed that constructing the new borehole is better than rehabilitating that would save the institute from wastage of time and capital planned for rehabilitation in addition to sustainability and reliability function of the borehole for long period of time