The study dealt with the origins and development of the sewage system in the city, its spatial variation, density and distribution. Analyzed also are the principal and secondary pumping stations, the treatment plants, the efficiency of the sewerage service, the spatial analysis of thesewage and the treatment plants and their associated network of pipes, the identification of the areas having sewerage services and the areas lacked the service. All analyses are conducted using GIS techniques. The study estimated the future needs and identified the problems confronting the draining of wastewater in the city, and suggested the optimal means to overcome them.