Development of a leakage control system at the water supply network of the city of Patras

摘要

High leakage levels in the water supply network of the city of Patras is one of the most important issues, which must be dealt by the Municipal Enterprise of Water Supply and Sewerage of Patras (DEYAP). DEYAP provides services to the 3rd largest city of Greece, Patras and the environs, covering a service area of 333 km~2 and a population of approximately 240.000. It is responsible for the Operation and Maintenance of the Water Supply system comprising a network of 1000 km of water pipes and 134.000 customer water meters. The Non-Revenue Water is approximately 55% of the System Input Volume from which a significant proportion is estimated as being physical losses. Until now the approach to leakage control is a passive one, whereby leaks are repaired only when they become visible. However, DEYAP is developing a permanent Leakage Control System according to the International Water Association (IWA) methodology. For the implementation of this system a project is currently under construction, including the Establishment of DMAs, Pressure Management, Creation of a GIS-based decision support system, Aggregation of various operational Databases through development of an intelligent reporting software with data warehouse techniques, Procurement of Leak detection equipment and training DEYAP's personnel in the operation of Pressure Management systems.