Freshwater withdrawal as a proportion of available freshwater resources, 2020
Water scarcity, 2030
Water scarcity, 2040
Gurdian graphic. Source: Food and Agriculture Organization of the United Nations
Water stress, the ratio of water demand to renewable supply, measures the competition over local water resources. The smaller the gap between supply and demand, the more vulnerable a place is to water shortages. A country facing “extreme water stress” means it is using at least 80% of its available supply, “high water stress” means it is withdrawing 40% of its supply.
Without intervention — such as investment in water infrastructure and better water governance — water stress will continue to get worse, particularly in places with rapidly growing populations and economies.