Climate change and urbanization have increased cities' challenges for managing wastewater, stormwater and flooding events. How can cities handle these in a cost-effective way, while addressing UN Development Goals, EU policies and directives, engaging citizens in sustainable water management as well as contribute to a growing market for water-related SMEs? That is the central question within the Horizon 2020 SCOREwater Innovation project.SCOREwater provide sensors and digital tools to improve waste water, stormwater and flood management. The tools are developed and tested by relevant stakeholders, including communities, municipalities, companies and civil society, in iterative cooperation with developers, and thereby adapted to the needs of the stakeholders. The project will also develop and use digital services for cities, such as methods, games, and immersive experiences to increase public and civil society's commitment to water management. The project features a unique approach to identifying and using social and organizational enablers for the development and effective use of the tools.SCOREwater will be carried out over the next four years by 14 organizations in three European cities. For example, SCOREwater uses a "sewer sociology" method for analyzing lifestyle habits based on water quality measurements in the sewer system (Barcelona) and new techniques for water quantity monitoring and hydrological modeling (Amersfoort). Resilience against stormwater flows is improved by monitoring in construction sites (Göteborg).This project has received funding from the European Union's Horizon 2020 Research and Innovation Programme under grant agreement no 820751