This text on aspects relating to environmental chemistry is designed for courses taught in departments of science and environment, biotechnology, and chemical and civil engineering. It provides a good exposure to the biological diversity of the environment and deals with its various life supporting systems, their ecological aspects and effects on the sustenance of life. This book attempts to cover the important aspects of air and water pollution, and several other effects of industrial and agricultural activities on pollution. This revised and new edition also discusses chemical toxicology and waste management. KEY FEATURES Discusses catastrophic depletion of oxygen and molecular mechanisms on mutagenesis, and their overall impact on the environment. Analyzes the quantification of pollutants through microbiological and biochemical techniques; eutro- phication level and its impact on Biological Oxygen Demand (BOD) and Chemical Oxygen Demand (COD). Explains the role and implication of some less common pollutants such as metals, mines, and polymers.