BALTFLOODS aims to enhance flood preparedness and mitigate runoff pollution in cities across the Baltic Sea region by leveraging digital and technological solutions and engaging citizens as key stakeholders. The project addresses three main challenges aligned with the thematic scope of Priority 1 of the Interreg Baltic Sea Region Programme, particularly Objective 1.2. Firstly, BALTFLOODS will improve disaster preparedness and response to floods by implementing advanced monitoring systems that provide real-time data for timely interventions, benefiting local and national public authorities, infrastructure owners, and service providers. Secondly, the project will decrease the discharge of polluted stormwater, thus enhancing environmental quality and public health. This involves monitoring water quality through innovative approaches that support environmental and public health goals. Thirdly, BALTFLOODS will increase community engagement in flood and water pollution issues through participatory tools, empowering citizens and educational institutions to take an active role in environmental stewardship. By fostering a well-informed and proactive community, the project builds societal resilience to environmental threats. Transnational cooperation will be essential to facilitate knowledge exchange, policy alignment, and resource pooling to enhance the scalability and sustainability of the solutions, ultimately benefiting urban populations and the Baltic Sea Region ecosystem.