Water scarcity and contamination are pressing challenges that demand immediate attention and innovative solutions. This book addresses critical issues surrounding the management and quality of water resources, offering insights into effective strategies for sustainable practices and policy development. Readers will explore the complexities of transboundary water resources and the geopolitical frameworks that influence cooperation and conflict resolution. The text delves into the significance of Managed Aquifer Recharge (MAR) as a viable approach to bolster groundwater supplies, while also examining the trends and implications of geogenic and emerging contaminants in our water systems. With an emphasis on the interconnectedness of human, animal, and environmental health, this comprehensive resource promotes integrated management approaches that foster overall sustainability. By bridging the gap between scientific research and practical applications, this book equips professionals and policymakers with the knowledge needed to navigate the challenges of water quality and availability in a changing world.