Chapter1. Lower Gangetic delta: An overview._Chapter2. Aquatic status of Gangetic estuaries -- Chapter3. Heavy metal status in the lower Gangetic delta -- Chapter4. Nutrient level in the lower Gangetic estuaries -- Chapter5. Pesticide level in the lower Gangetic delta -- Chapter6. Climate change and pollution -- Chapter7. Pollution from aquaculture -- Chapter8. Monitoring and management of pollution level.This book critically analyzes the water quality in the lower Gangetic delta, and examines the environmental conditions and physical processes operating in this rich ecosystem. Readers with an interest in environmental science, geography, oceanography, marine biology, environmental biology, aquatic pollution and ecology will find the research presented here most appealing. Readers will discover critical aspects of the chemistry of the estuarine water (particularly that of Hooghly and Matla estuaries) in the lower stretch of the delta region along with the causes and effects of pollution in and around this region. Particular attention is given to the bioaccumulation of conservative pollutants in edible fishes and floral communities thriving in this region. Several case studies are also incorporated to highlight the vulnerability of pollution in this region. Chapters also address the impacts of climate change (specifically acidification) on the concentration and be havior of conservative pollutants. Finally, the book highlights some mitigation measures at the technology and policy level to minimize the negative impacts posed by different groups of pollutants on the estuarine biodiversity. .