The main impacts on water availability and use are due to human activity. Economic expansion and rising living standards will continue to drive the demand for water in the years to come. Over 90% of the projected population growth by 2050 (3 billion more people) will be in developing countries, often in regions which already are water scarce. OECD Insights: Water: OECD Report on Managing Water Resources looks at how issues ranging from infrastructure financing to climate change influence water resources, as well as the importance of water in activities ranging from energy production to agriculture.