The General Assembly of the United Nations declared the years from 2005 to 2015 the "International Decade of Water". During this period, the U.N. intends to devote special efforts to guarantee access to water to all human beings and future generations. Today we are faced with a daily, widespread and systematic violation of the right to water. There are many interrelated aspects at play in this situation. Environmental, political, economic, legal, historical, social and cultural perspectives represent different keys to interpret water issues and the difficulties faced by a large section of the world population in accessing it. This volume is part of the project called "Water: a common good of humanity, a right for all" which includes a broad range of international initiatives directed to promoting a culture of water as a common good, and an opportunity to participate in an act of active citizenship based on cooperation and solidarity with all the people of the world. Water between education and cooperation deals with four issues: - Development Education and Water Education: Key Concepts and Critical Issues - Water Education and Citizenship Education: Perspectives and Problems - Approaches to Water and Citizenship Education - Support Work to Strengthen a "Water Committee" in the Municipality of Tapacarí (Cochabamba - Bolivia) Flavia Virgilio