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Navigating the Nexus: Challenges in Water, Energy, and Food Security

The Nexus Challenge emphasizes the interconnectedness of water, energy, and food resources. These sectors are vital for global sustainability as they face increasing stress from climate change and population growth. With water accounting for approximately 8% of global energy withdrawals and food production consuming 80-90% of freshwater, innovative solutions are needed. The 2014 Water, Energy, and Climate Conference in Mexico City focused on promoting efficiencies, utilizing wastewater, and fostering discussions for sustainable practices. Join us in finding solutions at www.waternexussolutions.org.

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Navigating the Nexus: Challenges in Water, Energy, and Food Security

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  1. Understanding the Nexus ChallengeKatharine Cross International Water AssociationWater, Energy and Climate ConferenceMay 22nd, 2014Mexico City, Mexico

  2. Linking energy, water and food resources Energy, water and food are inextricably linked - Water for energy currently amounts to about 8% of global water withdrawals (45% in industrialized countries, e.g. in Europe). - Food production and supply chain is responsible for around 30% of total global energy demand - Food production is the largest user of water at the global level, responsible for 80–90% of consumptive water use from lakes, rivers and aquifers

  3. The nexus Natural Resources Water security Ecosystem Function Adapted from SEI 2011

  4. Global population Source: UNESCO Source: UN Population Division 2008 Source: UN-HABITAT

  5. Global water use Source: UNEP 2008

  6. World energy mix 2008 Source: National Geographic 2013

  7. WORLD ENERGY Mix 2035 Source: National Geographic 2013

  8. > 50% of irrigated agriculture in areas of high or extremely high stress Source: WRI Aqueduct 2013, Siebert et al. 2013 Global Map of Irrigation Areas

  9. Increased water stress in many irrigated areas by 2025 Source: WRI Aqueduct 2011 (Based on IPCC Scenario A1b) Water stress data from The Coca-Cola Company. Siebert et al. 2013 Global Map of Irrigation Areas

  10. Climate Change Source: Mahlstein et al 2011

  11. 2050 – The Challenge 9 Billion People 60% More Food 55% More Water 80% More Energy

  12. Nexus 2050 trajectories

  13. Nexus Solutions Improve energy efficiency Improve water efficiency Recover nutrients from wastewater to produce fertilizer for agriculture Produce energy from wastewater Water and Wastewater Companies for Climate Mitigation

  14. Nexus @ Forefront of Policy & Scientific Debate

  15. CONTRIBUTE YOUR SOLUTIONS! Visit the new website: www.waternexussolutions.org Follow us on Twitter @WaterNexus and Facebook Contact us: info@waternexussolutions.org Share your tools and case studies

  16. Nexus dialogue on Water Infrastructure solutions

  17. Nexus dialogue on Water Infrastructure solutions Beijing 2014 ASIA AFRICA LATIN AMERICA

  18. Thank you! More information: katharine.cross@iwahq.org www.waternexussolutions.org

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