CASTWATER is the first Interreg MED project to support sustainable tourism policies & practices on water efficiency in coastal areas. The transnational challenge is to reduce the impact of tourism activities on environmental heritage and to improve management of water resources. The project's overall objective is to support sustainable tourism water management in Med coastal areas, by improving the monitoring and assessment of the water sustainability performance of the tourism sector. In this project University of Patras participates along with 10 more partners representing 10 EU Regions in total. The project is co-financed by the European Regional Development Fund - 85% ERDF and 15% National.