Methodological tools for the identification of risk agglomerations from the point of view of combined sewer overflows and for the effective design of measures in catchments

The aim of the project is to provide methodical support to the public administration in connection with the requirements of the revised Urban Wastewater Treatment Directive 91/271/EEC (UWWTD) regarding the combined sewer overflows (CSOs). The partial goals are: 1. on a sample of agglomerations of 10,000-100,000 PE to find out the % of risky agglomerations potentially not meeting the UWWTD goal of CSOs representing less than 2% of the annual collected wastewater load; 2. develop and test a screening methodology for identifying risky agglomerations; 3. develop a methodology for planning measures to reduce pollution from CSOs in relation to the priorities of measures in the UWWTD, their effectiveness for different rainfall types and their long-term effectiveness in relation to climate change.