Book excerpt: Financing Water Security and Green Growth offers a comprehensive overview of the innovative financial instruments and approaches available to implement water security and green growth initiatives at various scales and in different contexts. Robert C. Brears explores the use of a variety of public, private, and blended finance models to create climate-resilient water supplies, reduce water-energy-food nexus pressures, encourage water conservation and efficiency, and increase water reliability. He examines how these methods can decrease the costs and pollution associated with wastewater disposal, utilize natural processes to improve water quality, manage water quantity by restoring the hydrologic function of the landscape, and improve overall water governance. The book also provides in-depth case studies of the innovative application of financing tools to achieve water security and green growth in various locations of differing climates, lifestyles, and income levels, and identifies best practices.