The Waternomics project is a research project funded by the European Commission to explore how ICT can help households, companies, and cities manage water more efficiently. The project has involved developing new technologies and a methodology to provide personalized water consumption and availability information to help with decision making. Pilot tests of the approaches were conducted in Greece, Italy, and Ireland. The project has generated ideas for new products and services, pursued additional research, and involved partnerships between the nine participating organizations from four countries.