The triennial UN World Water Development Report is a joint undertaking of 24 UN agencies comprising UN-Water in partnership with governments and other stakeholders, and coordinated by WWAP. The Report builds on the conclusions of the 1st United Nations World Water Development Report 'Water for People, Water for Life' published in 2003. It presents a comprehensive picture of freshwater resources in all regions and most countries of the world as it tracks progress towards the water-related targets of the UN Millennium Development Goals and examines a range of key issues including population growth and increasing urbanization, changing ecosystems, food production, health, industry and energy, as well as risk management, valuing and paying for water and increasing knowledge and capacity. Sixteen case studies look at typical water resource challenges and provide valuable insights into different facets of the water crisis and management responses. Finally, the report outlines a set of conclusions and recommendations to guide future action and encourage sustainable use, productivity and management of our increasingly scarce freshwater resources.