The International Conference on Sewer Processes and Networks (SPN) is held every 3^rd year by the Sewer Systems and Processes Working Group under the IWA specialist group on Urban Drainage (Joint IAHR/IWA). The last of these conferences, the SPN 8 and SPN 9, were held at TU Delft in Rotterdam, The Netherlands, and at Aalborg University in Aalborg, Denmark.
This year, from 24^th to 26^th of August 2022, we are happy to host the 10^th edition of the International Conference on Sewer Processes and Networks in Graz, Austria at Graz University of Technology.

To underline the virtues of being a specialist conference there are no parallel tracks so as to allow all attendees to participate in discussions.

The main themes for the conference are:

• Sewer system impacts
• In-sewer processes
• Design and operational issues
• Monitoring and associated technologies
• Emerging issues and new technologies related to sewers

These topic areas have been selected to encompass all the scientific and technical areas (physical/chemical and biological processes, operation, monitoring and management) that are important for sewer networks. The topics cover pure scientific topics as well as more technical fields of interest, such as sewer asset management and inspection techniques.