The Water-smartness Assessment Framework was developed under the H2020 B-WaterSmart project (Accelerating the transformation to water-smart economies and societies in coastal Europe and beyond) to assess and monitor water-smartness addressing technical, economic (circular economy), societal (governance, policy, acceptability), environmental, and risk dimensions. This holistic framework provides an integrated approach to support multi-stakeholder and strategic decision-making towards the transition to a water-smart society. It is objective-driven with a tree-model composed of objectives, assessment criteria and metrics allowing to develop tailored assessments and analysis, and to track compliance with established goals. It facilitates a clear identification of main strengths and weaknesses, establishment of priorities and monitoring of progress in implementing water-smart strategies. Its mission is to empower cities with a practical methodology to support decisions on the measures needed to achieve a water smarter society and to develop strategies considering the long-term.