Water is needed to provide humanity with food and energy, and it must be managed properly to ensure the survival of the earth's ecosystem. That "nexus" makes an Integrated Water Resources Management (IWRM) approach indispensable.

Due to the close linkages with water resources management, GWP reaches out to agricultural, environmental, and energy partners through cross-sectoral projects and initiatives. With an increasing emphasis on addressing the three areas together with water, through a nexus approach, GWP continues to explore the linkages and conflicts between the three themes.

The involvement of GWP focuses on the country level for this thematic entry point. Indeed, all or almost all countries are equipped with food security policies, energy policies, and ecosystems policies. Hence, there is a need and a niche for GWP Country Water Partnerships to go out of the water box and to reach out to stakeholders of the other sectors in order to promote an integrated water-energy-food-ecosystems approach to sectoral challenges. In this context, a first initiative started on the issue of water and food security in Sub Saharan African countries, building on the work done at global level by the Committee on World Food Security.

Looking back at 2017-2019, key activities included: