Assessment of the Water Distribution Network of Metu Town Water Supply System, Ethiopia
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Date
2016-11
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Addis Ababa University
Abstract
Intermittent water distribution is the key problems of many water authorities in developing countries
including Ethiopia. Hence, this research was conducted to carry out the assessment of the water
distribution network of Metu town existing water supply system which is located in western Oromia
region of Ethiopia. To examine the hydraulic performance of the water distribution network, water
CAD modeling was adopted. Accordingly, different reviewed reports, percentage of Non-Revenue
for water, and discussions with water service personnel were conducted to analyze water losses and
leakage management practice in the town. As per the analyzed results; the current maximum water
demand in Metu town is estimated at 4,206.93 m3/day, while small reservoirs capacity and low pump
efficiency were observed in the town water distribution networks. According to simulated results;
the maximum of 203.68m and 199.49m, and minimum of 5.36m and 2.97m water pressure head
were examined in the transmission and distribution main, respectively. Further, the analyzed water
losses result in Metu town indicates that about 34.64% of production is Non-Revenue Water.
Thereby, apparent losses cover 21.12% of total loss and 13.52 % were physical losses. Accordingly,
for the case of Metu town apparent losses are more significant, however physical losses contributed
considerable volume of lost. In general, rising in water demand, small capacities of existing
infrastructures and large volume of water loss were leads to intermittent water distribution in Metu.
Hence, most of residences were not satisfied on the town water service. Therefore, it is significant to
rehabilitate and improve the water distribution system capacities and providing more attention to
water losses reduction policies and strategies are vital for remedial measures.
KEY WORD: water distribution network, hydraulic water CAD modeling, water loss, leakage
management, Metu town, Oromia region, Ethiopia.
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Keywords
water distribution network; hydraulic water CAD modeling; water loss; leakage management; Metu town; Oromia region; Ethiopia