The 2015 UN-Water Zaragoza Conference will be facilitated by the UN-Water Decade Programme on Advocacy and Communication (UNW-DPAC).

Sessions will be convened by UN-Water members, partners, programmes and other partner organizations. The initial list including but not limited to:

For stakeholder parallel sessions

• CEO Water Mandate
• United Nations Department of Economic and Social Affairs (UNDESA) and ICLEI – Local Governments for Sustainabilit
• United Nations Educational, Scientific and Cultural Organization (UNESCO)
• Women for Water Partnership (WfWP) and World Youth Parliament for Water (WYPW)

For the themes

• World Health Organization (WHO) in collaboration with the United Nations Children's Fund (UNICEF)
• Global Water Partnership (GWP) in collaboration with the Food and Agriculture Organization of the United Nations (FAO)
• United Nations Environment Programme (UNEP) in collaboration with the Secretariat of the Convention on Biological Diversity (CBD)
• United Nations International Strategy for Disaster Reduction (UNISDR)

For the means of implementation

• Cap-Net UNDP
• The World Bank (tbc) with the collaboration of the Organisation for Economic Co-operation and Development (OECD)
• United Nations Environment Programme (UNEP) in collaboration with the United Nations Industrial Development Organization (UNIDO)
• OECD Water Governance Initiative

Regional sessions

• Economic Commission for Latin America and the Caribbean (ECLAC)
• United Nations Economic and Social Commission for Asia and the Pacific (UNESCAP)
• United Nations Economic Commission for Europe (UNECE)

Other collaborators (organizing sessions) include:

• AquaFed, the International Federation of Private Water Operators
• United Nations Human Settlements Programme (UN-Habitat)
• United Nations World Water Assessment Programme (WWAP)
• International Water Association (IWA)
• International Water Management Institute (IWMI)
• Middlesex University, United Kingdom
• University of Osnabrück, Germany
• Michigan State University. U.S.A.
• Polytechnic University of Catalonia
• University of Alcala
• World Council of Civil Engineers (WCCE)
• World Resources Institute (WRI)
• Alliance for Global Water Adaptation (AGWA)
• Stockholm International Water Institute (SIWI)
• Centre for Affordable Water and Sanitation Technology (CAWST)
• International Union for Conservation and Nature (IUCN)
• World Council of Civil Engineering (WCCE)
• National Commission of Water of Mexico (CONAGUA)
• Government of Nigeria
• Government of the Netherlans
• German Federal Institute of Hydrology
• Water Supply and Sanitation Collaborative Council (WSSCC)

Members of the Local Support Committee

• Ministry of Agriculture, Food and Environment of Spain
• Ministry of Foreign Affairs and Cooperation of Spain
• Spanish Agency for Cooperation and Development (AECID)
• Municipality of Zaragoza, Spain
• Water Institute of Aragon, Spain
• Ebro River Basin Authority, Zaragoza, Spain

Organisersations supporting the conference (includingthose organising side events and technical visits)

• IMDEA Institute
• Lawyers Association of Zaragoza, Spain
• Veolia
• Engineering for human development (ONGAWA)
• Gas Natural Fenosa
• Aquae Foundation
• University of Zaragoza, Spain
• Water Footprint Network
• Botín Foundation
• Ministry of Agriculture, Food and Environment of Spain
• Ministry of Foreign Affairs and Cooperation of Spain
• Spanish Agency for Cooperation and Development (AECID)
• Itaipu binational
• Ecology and Development Foundation (ECODES)
• National Water Commission of Mexico (CONAGUA)
• Global Water Solidarity (UNDP)
• Veolia
• Municipality of Zaragoza, Spain
• Ebro River Basin Authority, Zaragoza, Spain