List of Tables List of Boxes List of Figures Introduction Chapter 1: Urbanization: Sewage and Storm-water The Water Carriage Revolution Urban Runoff Chapter 2: Industrialization: Chemical Contaminants Suspended Solids Organic Material Heavy Metals Synthetic Chemicals Acidic Wastes Chapter 3: Intensive Farming: Fertilizers and Pesticides History of Modern Farming Nutrients Pesticides Animal Wastes Soil Erosion Chapter 4: Case-Studies: The Rhine and the Great Lakes Introduction History Current Levels of Pollution Legislation The Future Chapter 5: Prevention Urbanization Industrialization Agriculture Chapter 6: Legislation and Economic Policies Legislation Economic Approaches Public Pressure Watershed Management Chapter 7: Introduction to Ecological Technologies Characteristics of Natural Systems Fundamental Mechanisms of Natural Systems Chapter 8: Soil-based Systems Rationale for Soil-based Treatment Slow-rate Treatment Rapid Infiltration Systems Overland Flow Systems Performance Land Application of Sludge Chapter 9: Aquatic Plant Treatment Systems Constructed Wetlands Waste Stabilization Ponds Floating Aquatic Plant Systems Combined Systems Living Machines Chapter 10: Coda: Rethinking Water Carriage Grey-water Systems Chapter 11: Ground-water: The Special Issues Sources of Pollution Ground-water Treatment Chapter 12: Conclusions: Directions for the Future List of Terms Bibliography Index.