We are excited to announce the kick-off meeting for the MARGIN project on 19./20.09.202 . MARGIN focuses on "Managing Groundwater Sustainability in Urban Areas", addressing the pressing issue of groundwater vulnerability due to climate change and urbanization, particularly in Alpine cities. The project aims to develop effective adaptation measures to safeguard groundwater quality and quantity, essential for drinking water, energy, and ecosystem health. By examining the four pilot cities Milan, Ljubljana, Linz and Munich and involving a Network of Observers, MARGIN will enhance city planning and policy-making through a practical toolbox of guidelines and best practices. This initiative will empower cities to responsibly manage their groundwater resources and build resilience against environmental challenges.