The water supply systems for its complexity and own characteristics embed a certain index of water losses in the production. Besides, an old infrastructure, common in the Brazilian water supply systems, propitiates an accelerated process of deterioration, giving as consequence larger maintenance problems, especially elevating the indexes of water losses due to the resulting effects of the negligence to the conservation activities. In consequence, the Water Companies have the problem of high revenue losses when wasting fresh water by lack of an appropriate management. Furthermore, the managers need a new posture front to the decision making process, regarding to the action to be implemented, for a better efficiency of the system operational control, in order to avoid the losses. The objective of this work is to present a multicriteria model based on the PROMETHEE I method to support the manager in ranking the critical areas of losses, seeking to allocate investment of time and resources in the water supply systems in a more efficient way, focus on its efforts in the most critical areas.
multicriteria; ranking; water losses
