Eutrophication, the excessive enrichment of water bodies with nutrients, leads to harmful algal blooms and ecosystem collapse. This book explores the causes, ecological impacts, and management strategies to combat eutrophication. It examines the role of agriculture, wastewater, and climate change in accelerating this process, providing insights into mitigation efforts and policy initiatives aimed at preserving aquatic ecosystems. The book is a critical resource for environmental scientists, policymakers, and water resource managers.