This book offers innovative scientific ideas and technical expertise for a sustainable solution in water resources and water pollution treatment. The book explores and explains the potential of the emerging partnership between Brazil, Russia, India, China, and South Africa (BRICS) in solving the water-related issues in the BRICS countries. The book serves as baseline information for future adaptation plans in water-related issues in the BRICS countries. It covers inter-disciplinary research and applications in integrated water resource management, water quality assessment, water pollution and treatment in the BRICS nations. The topics on water resource management include technological intervention and solutions for climate change impacts on water resources, irrigation system, water security, clean water to all, sustainable water reuse, flood risk assessment, river basin management, hydro policy and wastewater-based monitoring of COVID 19 infections. This book will be useful for students, researchers, policymakers, and professionals working in the areas of water management, wastewater treatment, industrial wastewater treatment and environmental sciences.