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ABSTRACT
Water as we know is a very important factor for man’s existence as man can’t live without water. In other to provide water for BDPA Settlement, a source had to be carefully chosen and then harnessed to provide water that is fit for both use and consumption. Water source selection can be a very daunting task as there exist various sources with each source having one advantage or more over another. BDPA has been faced with the challenge of having adequate water supply, let alone potable water for consumption. The water sources of BDPA residents is studied with the model so as to assist its future operation and the design of alternative system improvement works. AHP, a technique used in Multi-criteria Decision Analysis (MCDA) had made important contribution to the practical decision making process by recognizing the decision makers (DMs) experience and in providing the possible best compromised solution in terms of multiple objectives and multiples DMs and stakeholders preferences. The use of multi-criteria decision analysis in the selection process helped in this research work to carefully analyze decisions made in order to produce relevant data from which a sound decision was made. The Analytic Hierarchy Process (AHP) and The Order of Preference by Similarity to Ideal Solution (TOPSIS) which are tools under multi-criteria decision analysis were used to analyze the information obtained from Water experts and public surveys through the use of questionnaires to provide a result that allowed for a source to be selected. The results obtained from the two methods were compared. From the results obtained, borehole (having the highest composite weight of 41.72 gotten from the analysis) was chosen as the most suitable water supply source with respect to the five criteria considered which were; cost, impact on public health, availability, accessibility and infrastructural requirement.
