Numerical modeling and leakage reduction in the water distribution system of Udine

The paper describes the effective achievements in terms of water supply and water resources management obtained by AMGA S.p.A. within the GAP-UK Project (Interreg IV Programme). Two main issues are addressed, namely, the calibration of the numerical simulation model and the water loss reduction which has been obtained after extensive leakage identification and repair campaigns performed all over the network. In particular, the priority of leakage identification and repair has been assigned to those sectors affected by a high rate of water loss, as a result of modeling and monitoring, thus confirming some model prediction. All the identified leakages have been repaired and the effect on the global water balance of the system is evident, characterized by a minimum night flow which passed from 215 L/s down to 165 L/s.