Abstract
Water leakages are one of the most significant uncertainties affecting the water supply systems (WSSs) modelling. Due to the dependence between water losses and pressure, the WSSs characterised by high values of pressure in the distribution network are strongly involved by this problem. High-pressure conditions are typical of WSSs in the mountain areas. In this study, a real WSS of the Alpine region is analysed through simultaneous calibration of water losses and pressure reducing valves with a genetic algorithm. The demand is represented by the uniformly distributed along pipes scheme by dealing with the water request separately from the losses.