Water reuse to free up freshwater for higher-value use and increase climate resilience and water productivity

Drechsel, Pay, Qadir, Manzoor and Baumann, Jakob, (2022). Water reuse to free up freshwater for higher-value use and increase climate resilience and water productivity. Irrigation and Drainage, 1-10

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  • Sub-type Journal article
    Author Drechsel, Pay
    Qadir, Manzoor
    Baumann, Jakob
    Title Water reuse to free up freshwater for higher-value use and increase climate resilience and water productivity
    Appearing in Irrigation and Drainage
    Publication Date 2022-02-21
    Place of Publication New Jersey
    Publisher Wiley Online Library
    Start page 1
    End page 10
    Language eng
    Abstract The impact of climate change on the availability of water affects all types of land use and sectors. This complexity calls for integrated water resources management and negotiations between sectors on the most important, cost-effective, and productive allocation of water where it is a limited resource. This reflection paper shows examples of adaptation efforts to water scarcity at a scale where gains in water productivity can be derived from inter-sectoral water reuse and wastewater–freshwater swaps, complementing other water scarcity coping strategies (water savings, long-distance transfer, and desalination). Wastewater treatment for reuse offers opportunities across scales as it allows, for example, donor regions to be compensated with reclaimed water for the release of freshwater for higher-value use, increasing overall economic water productivity in this way. In such water swaps, farmers are compensated with higher water volumes in exchange for higher quality. The reuse of water between sectors offers opportunities to (i) expand the traditional (agricultural) water productivity concept and (ii) significantly increase water productivity at the system level. While rural–urban water reallocation can help mitigate the impacts of climate change, compensating farmers with reclaimed water remains limited for the reasons discussed in the paper.
    Keyword climate change adaptation, rural–urban water transfer, wastewater use, water productivity, water swap
    Copyright Holder The Authors
    Copyright Year 2022
    Copyright type Creative commons
    DOI 10.1002/ird.2694
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    Created: Sat, 12 Mar 2022, 04:01:56 JST by Zeineb Bouhlel on behalf of UNU INWEH