The effects of climate change on freshwater resources and the potential for shortages and reduced access to potable water and sanitation could limit job creation and economic growth  in the coming decades, a report from UN Water warns. According to the 2016 UN World Water Development Report: Water and Jobs (164 pages, PDF), for each degree of average global temperature increase, 7 percent of the world's population will face a nearly 20 percent reduction in their renewable water supplies. The report also notes that half the global workforce is employed in eight water and natural resource-dependent industries: agriculture, forestry, fisheries, energy, resource-intensive manufacturing, recycling, building, and transport. At the same time, sustainable water management will play a key role in the transition to a greener economy, as projected water shortages drive calls for investments in alternative sources such as rainwater harvesting, recycled wastewater, and urban runoff, resulting in new jobs in research, technology, and implementation.