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Nowhere is this more true than the nexus between food, energy, water and waste - four key resources that ultimately define much of a city's lifestyle choices and consequent environmental problems.

Food Sustainability: Sustainable food systems depend on efficient resource use, minimizing waste and ensuring equitable access to nutrition.		Energy Efficiency: Clean and resilient energy systems are essential for reducing emissions and supporting water and food security.
Water Management: Water availability and quality are critical for agriculture, energy production, and maintaining healthy ecosystems.		Waste Minimization: Effective waste management transforms byproducts into resources, closing the loop for a circular economy.

This feature brings together the four themes under the FEWW Nexus that GDRC has been working on, in order to explore the interconnectedness and cross-cutting issues between them. Click on each of the four themes to explore the work done.

The thinking behind the FEWW nexus construct is straightforward - each of the four issues influence, and are in turn influenced by, the other three issues.

Food ↕ Water	Agriculture accounts for most freshwater use, while water scarcity directly affects crop yields and food security.</td>
Food ↕ Energy	Modern agriculture relies on energy for irrigation, machinery, fertilizer production and transportation, while crops and agricultural residues can provide renewable bioenergy.
Food ↕ Waste	Food waste represents lost land, water and energy resources, but can be converted into compost, animal feed or biogas
Water ↕ Energy	Water treatment, pumping and desalination require energy, while most forms of energy generation depend on reliable water supplies.
Water ↕ Waste	Untreated wastewater pollutes rivers and groundwater, whereas treated wastewater can become a valuable source of water, nutrients and energy.
Energy ↕ Waste	Organic and municipal wastes can generate electricity and heat, reducing landfill use while producing renewable energy.

Highlights of GDRC Research

The FEWW Nexus: Integrating Food, Energy, Water, and Waste for Sustainable Cities Continuing Research Series E-191 Prioritzing the Circular Economy: A "FEWW" Perspectives for Asian Countries Continuing Research Series E-272 A FEWW Illustrations: Demonstrating the Connections Case Study Series C-133 • F The FEWW Nexus - Food Sector Concept Note Series C-129 • E The FEWW Nexus - Energy Sector Concept Note Series C-129 • W The FEWW Nexus - Water Sector Concept Note Series C-129 • W The FEWW Nexus - Waste Sector Concept Note Series C-129