The world’s demand for water is likely to surge in the next few decades. Rapidly growing populations will drive increased consumption by people, farms and companies. More people will move to cities, further straining supplies. An emerging middle class could clamor for more water-intensive food production and electricity generation.
But it’s not clear where all that water will come from. Climate change is expected to make some areas drier and others wetter. As precipitation extremes increase in some regions, affected communities face greater threats from droughts and floods.