| Abstract |
The management problem addressed in this work is to formulate a model to determine optimal cost for water supply given surface and/ or underground water sources. The optimal cost is used to address sustainable management of the Awka/Amawbia Water Schemes by Anambra State Water Corporation Awka. The models take into account annual operation and maintenance (0 and M) costs to enable the water agency to stay in business. The annual 0 and M costs for a typical water treatment scheme for varying average inflows of raw water were formulated. For modeling, three varying ratios of 10, 30, 15, 20, 25%; 15, 35, 10, 15, 25% and 10, 40, 10, 10, 30% were apportioned for the unit treatment processes of sedimentation, coagulation and flocculation, filtration, metals removal and disinfection, respectively and were used to derive annual 0 and M linear cost models for the treatment processes for the typical water scheme. The critical cost model was adopted to ensure sustainable management of the Awka/Amawbia Water schemes. The adopted model when compared with accruable annual revenue gives viable water schemes. |