The revised and updated second edition of Water and Sanitation Related Diseases and the Changing Environment offers an interdisciplinary guide to the conditions responsible for water and sanitation related diseases. The chapters will be organized consistent with the organization of the First Edition except as they reflect additions that are better kept together, e.g. climate change and public health will immediately follow background chapters on water, sanitation and hygiene. This will be followed by an update on Changing Geographic Distribution of Disease Vectors. Also, although referred to in many incidences throughout the First Edition, hygiene will receive a more substantial attention in the Second Edition.PREFACE CONTRIBUTORS INTRODUCTION The Introduction will discuss and emphasize of the significance of the close relationships among water quality, sanitation, hygiene, human activity, climate change and other environmental factors, and diseases.  It will provide a brief discussion of the health problems resulting from lack of adequate access to clean water, exposure to unsafe water, lack of and inadequate sanitation and hygiene, a summary of some of the microbes prevalent in these situations, and an overview of resulting exposure to disease, morbidity and mortality. The Introduction will lay the foundation for understanding how water and sanitation-related diseases are further aggravated by nutritional inadequacies and infections, and problems that often exist in the same person. Janine M. H. Selendy, Jens Aagaard-Hansen Section I: Water, Sanitation and Hygiene: Meeting the Need1. Water Sanitation and Hygiene: Taking Stock and A Continuing Need to Address Spatial and Social Equity Jay P. Graham 2.     Addressing the Persistent Problem of Open-Defecation Jay P. Graham or other 3.     Sustainable Development Goals 3 and 6: The Problems and the Objectives Goal 3: Ensure healthy lives and promote well-being for all at all ages Goal 6: To Ensure access to water and sanitation for all , by recognizing that the protection of water quality and water-related ecosystems benefits environmental health, which ultimately contributes to public health protection. Nikhil Chandavarkar 4.     The Effects of Population on the Depletion of Fresh Water Robert Wyman Section II: Climate Change and Human Health5. Climate Change and Human Health Josh Karliner et al Health Care Without Harm 6.     Changing Geographic Distribution of Disease VectorsMary Wilson 7. Water and War: Armed Conflict and Environmental Migration Barry S. Levy, Victor W. SidelSection III: Water and Sanitation-Related Diseases 8. Infectious Diarrhea Mathuram Santosham, Margaret Kosek, Anita Shet, Sean Fitzwater 9.     Malnutrition and Undernutrition José Graziano da Silva, Director-General, Food and Agriculture Organization of the United Nations 10.     Geohelminths: Ascaris, Trichuris, and Hookworm Infections Brian G. Blackburn and Alexander T. Yu, MD, MPH.     11. Toxic Cyanobacteria Ian Stewart, Lorraine C. Backer, and Wayne W. Carmichael 12.     Dengue: A Water-Borne Disease Scott B. Halstead 13.     Dracunculiasis (Guinea worm disease): Case Study of the Effort to Reduce Guinea Worm Donald R. Hopkins, Ernesto Ruiz-Tiben 14.  Onchocerciasis Adrian Hopkins, Boakye A. Boatin 15.  Malaria and Related Diseases Burton H. Singer, Marcia C. Castro 16.  Schistosomiasis Jens Aagaard-Hansen, Pascal Magnussen, Birgitte Jyding Vennervald 17.  Cholera Edward Dodge, M.D. To be confirmed 18. Cryptosporidiosis Author to be determined Section IV: Anthropogenic and Naturally Occurring Pollutants 19.  Naturally Occurring Water Pollutants 20.  Anthropogenic Sources of Water Pollutants Authors not yet confirmed 21.  Pharmaceuticals and Personal Care Products in the Environment and Antibiotic Resistance M. Danielle McDonaldSection IV: Water Treatment and Safe Storage  22.  Household Water Treatment and Safe Storage Thomas F. Clasen 23.The Role of Small-scale Private Service Providers in the Water Sector in Developing Countries Menachem Elimelech, Laura Sima 24. Global Substitution of Mercury-based Medical Devices in the Health Sector Peter Orris, Josh Karliner, Health Care Without Harm 25.Ecosystem services, water resource development and human infectious disease Uriel N. Safriel 26.  Ocean Pollution: Health Effects of Emerging Environmental Contaminants Author to be determined Section IV: Success Stories 27.  Water, Sanitation, and Hygiene Success Stories Author Not confirmed Water Supply and Sanitation Collaborative Council (WSSCC) is a United Nations membership and its work through the Global Sanitation Fund will be asked to contribute (Horizon International is a member and the organization has featured the First Edition on its website for years) 28. The Sanitation Challenge in India and Household-Centered Environmental Sanitation Systems Bindeshwar Pathak 29. Extending The Right to Health Care and Improving Child Survival in Mexico Julio Frenk, Octavio Gómez-Dantés