Reliability analysis of the water distribution network of Oslo using WDNetXL

One of the most important objectives for water distribution networks is to provide safe and reliable water supply also changing system boundary conditions. This can be compromised by inadequate configuration of the system, unforeseen high water consumption and high leakages. Large water networks are complex and analysis of hydraulic performance requires computer models. In Oslo municipality, Water and Wastewater Department, is currently estimating the reliability of the water distribution system including the level of robustness, redundancy and preparedness of the system under today and future demand. First analyses indicate that closure of certain pipes may have relevant consequences as loss of water supply and reduction of pressure for a significant number of customers. Therefore, a major ongoing project on revision and safeguarding of Oslo water supply system also includes further analysis of the hydraulic system reliability. WDNetXL model system has been applied to this purpose.