Safe and adequate delivery of water to a consumption node is an essential function of water distribution network. However, throughout the world especially in developing countries, the hydraulic performance of water distribution network is inadequate to transfer available water to a consumption node. Assosa Town has been experienced frequent and regular disruption of water because of hydraulic problems related to pressure and velocity during high consumption period and at night time. This study was conducted in Assosa Town and the aim of the study was to evaluating hydraulic performance of the system and to assess water supply and demand loss of water at the town. For conducting this study, both primary and secondary data were collected and software such as Epanet, ArcGIS version, EndeNotex2, AutoCAD, Epa Cad, Total station and Geographic positioning system Garmin72 (GPS) were used. In this study, the model was run from the input of existing data, and a total of 435 nodes were reported from the project inventory dialog box. The simulated result for below, about 14 out of 435 nodes are below the minimum adopted system pressure. This indicates that the pressure within the distribution system is 3.218% of nodes below the minimum desirable pressures during peak hour demand, and these nodes are not capable of supplying the necessary demand to consumers, 1.15% of nodes exceed the maximum allowable pressures of greater than 70 m. While 95.63% of nodes are within the permissible pressure ranges of 15 m and 70 m pressure heads and 87.44% of the length of pipes were found to have a flow below optimum minimum velocity (less than 0.6 m/s), while 9.5% were within the recommended velocity (0.6–2 m/s). In the remaining 3.065% of the pipes, the water was found to flow above the maximum velocity (2.0 m/s).The total average per capita consumption of the town in the year 2023 was 31.2 l/p/d which shows lower performance compared to the value set by MoWIE (2019) for GTP-2, which are 60 l/c/d for category-3 towns and cities within a distance of 250 m. Assosa is facing a water scarcity problem, and the reason behind this scarcity is the pressure fluctuation and the scarcity of water supply. There is a large variation in the pressure head, and the pressure supplied is not sufficient to fulfill the water demand of the town. KEY WORDS: Water Distribution System Analysis, EPANET, Hydraulic Performance