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An Integrated Assessment of Investments Towards Global Water Sustainability

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Type: Journal Article
Author: Bassi, Andrea M.; Tan, Zhuohua; Goss, Sophie
Journal: Water
Volume: 2
Page(s): 726-741
Date: 2010
URI: https://hdl.handle.net/10535/6671
Sector: Water Resource & Irrigation
Subject(s): sustainability
water management
water resources
Abstract: "To date there has been limited research on integrated water resource management, specifically regarding investments, from a global perspective, largely due to the complexity of the problem and to generally local water management practices. Water demand and supply are very often affected by international factors and with global climate change, population growth and increasing consumption, water management is now more than ever a global issue. This paper gives an overview of current and impending water problems while assessing investment needs for integrated water management as a possible solution to projected water challenges. The analysis compares a business as usual case (BAU) to a scenario in which investments improve water efficiency use across sectors to curb demand, increase innovative supply from desalination and enhance conventional water resources management measures. System dynamics modeling is employed to represent the structural factors influencing water demand and supply in the context of an integrated framework including cross-sectoral linkages. The analysis confirms that sustainable water management is feasible, but it requires investments in the range of $145 billion per year between 2011 and 2050 (0.16% of GDP or $17/person/year) and timely, effective action."

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