| American Meteorological Society | dissemination of information on the atmospheric and related sciences |
| International Programme for Technology and Research in Irrigation and Drainage (IPTRID) | support in water management technologies and practices |
| International Water and Sanitation Centre (IRC) | information on low-cost water supply and sanitation in developing countries |
| International Water Management Institute (IWMI) | improve management of land and water resources for food |
| World Meteorological Organization (WMO) | UN system's voice on the state of the Earth's atmosphere |