The Integrated Housing Development Program (IHDP) is an ongoing mass housing developmentrnfor low and middle income dwellers of urban areas in Ethiopia. This study examines thernsustainability of water management in the occupied IHDP neighborhoods in Addis Ababa. Thernphenomenon is investigated through the analysis of a case study. The data are primarilyrncollected through qualitative techniques supplemented by a quantitative technique. This wasrndone in three parts: first finding out pre-design and design considerations of waterrnmanagement for Gofa-Mebrathaile condominium site; second investigate the household waterrnmanagement trend in relation to the design of the condominiums and third is measuring thernlevel of sustainability of the water management for this neighborhood.rnBased on the empirical evidence from the case study and analytical generalization the followingrnfindings are revealed. With the aim to alleviate the living standards of people the housing unitsrnare designed with indoor toilets and kitchens. This is considered to be one of the achievementsrnof the IHDP; before moving to the condominiums, in the slum areas, people were using sharedrnkitchens and toilets among a large group of people or do not have it at all. Due to this and thernexistence of flush toilets and use of conventional sewerage system the average daily demand isrnincreased to be 111 l/c/d from the previous 30 l/c/d. From this amount 80% of the water isrncalculated to be used by the flush toilets to make the sewerage system work properly. But therndemand and supply of water are not balanced. Due to this the case area is suffering fromrnshortage of water. People stay on average three to four days without water and this gets evenrnworse in dry seasons which could go more than eight days. The apartment units (usually smallrnspaces) and the shared spaces are being occupied by water storage containers as most of thernbuilding are not built with water reservoirs.rnSince the toilets and kitchens are found inside the units, there is a big chance of contaminationrnwhen the water supply is interrupted, which puts the residents health in a high risk. Theyrncannot also access external toilets in their surrounding as such options are not considered withrnthe neighborhood design. The actions taken by different authorities are not integrated in orderrnto solve the problem. AAWSA is the only responsible body to manage water and to overcomernthe problem of water shortage. The actions taken by this organization are traditional and therernare no much considerations for alternative and innovative ways. Even if there are somernconsiderations to adopt some sustainable water management principles by AAWSA, but sincernother decisions are not integrated the overall effect is not very visible.rnThe sustainable water management performance assessment method done in this research,rnshows that water management is partly unsatisfactory in terms of the accepted sustainable waterrnmanagement principles for developing countries. Finally the study recommends possiblernivrnsolutions for the already built condominiums and the coming ones to have a more sustainablernpractice in the management of water for housing development