Foreword: Water Quality, the Challenge of the Future 1. Water Quality Management: An Introductory Framework 2. Water—A Reflection of Land Use: Understanding of Water Pathways and Quality Genesis 3. Impact of Agriculture on Water Pollution in OECD Countries: Recent Trends and Future Prospects 4. Regulating Nonpoint Source Water Pollution in a Federal Government: Four Case Studies 5. Introduction to Environmental and Economic Consequences of Hypoxia 6. Financing Water Quality Management 7. Water Governance in Aragon 8. Water Management in the Ebro River Basin: An Approach to the 2010–15 Hydrological Plan 9. Water Quality in Zaragoza 10. Water Quality Management in China: The Case of the Huai River Basin 11. Water Quality Management in Egypt 12. A New Mindset for Integrated Water Quality Management for South Africa 13. Water Quality and Health in Poor Urban Areas of Latin America 14. Conceptual Framework for Protecting Groundwater Quality 15. Evolution of Water Management in Mexico 16. Agriculture and Water Pollution: Farmers’ Perceptions in Central Mexico