A completely revised and updated new edition of this successful book focused on urban policy innovations that promote the application of blue-green infrastructure in managing water resources sustainably. Since the first edition published, nature-based solutions in general and blue-green infrastructure, in particular, have become a more recognised solution to various societal challenges, including mitigating climatic extremes in cities while restoring the natural environment and enhancing biodiversity. This new edition provides updated research on urban policy innovations that promote the application of BGI in managing water resources sustainably. In particular, the book contains case studies that illustrate how cities of differing climates, lifestyles and income levels have implemented policy innovations that promote the application of BGI in managing water, wastewater and stormwater sustainably to enhance resilience to climate change and reduce environmental degradation. The seven case studies are leading cities that have implemented various fiscal and non-fiscal policy tools to encourage the implementation of BGI on both public and private property to reduce stormwater runoff volumes, enhance the health of waterways, enhance resilience to climate change and meet regulatory requirements.