The research problem can be stated as follows: – In Oran, nearly 70% of the drinking water supply is currently provided by non-conventional resources, i.e. thanks to seawater desalination stations. – The demand for fresh water is increasing rapidly due to a combination of population growth, urbanization, industrialization and irrigation requirements. This situation is likely to worsen in the future, if rational, long-term measures are not taken to compensate for this deficit in water resources. – As far as Algeria is concerned, the situation is particularly alarming: it is clearly suffering today from an unprecedented lack of water. – The threshold at which water shortages occur has already been crossed. The demand for fresh water is increasing rapidly due to a combination of population growth, urbanization, industrialization and irrigation requirements. This situation is likely to worsen in the future, if rational, long-term measures are not taken to compensate for this deficit in water resources. – Often dilapidated distribution networks, which pose problems of malfunction. – Added to this are other problems that tend to aggravate this deficit. the use of cisterns and containers in the domestic space, water tarpaulins, large reservoirs are only. – solving these problems by “scheduled cuts” does not allow water savings even if this is done on a distribution of the few resources between the populations, in order to fill the water deficit, – The SEOR administration indirectly admits its inability to respect the principle of continuous water availability as part of the “public service”, by agreeing to legalize a new informal and private water distribution sector. – The wilaya of Oran has no dams, and its own natural resources today represent only 2%, concentrated in the Bredeah station as well as a few wells and boreholes. – The objective is to report on the management of urban water in Oran, through the actions carried out by institutional actors and the analysis of the reactions of users, faced with this scarcity of the resource. Methodology: – The resource-need balance and aims to assess the demand for drinking water in the wilaya of Oran. – We will have to present the evolution of demography, know the extension of the urban space and the increase in water needs. – The whole sector of housing and town planning is being modified, new data appear above all in the socio-spatial context. Goals: – Draw an organizational plan for water resources in the domestic sector. A house cannot be transformed into a water tower.