, PARIS, Mar 21 – Surging populations and economies in the developing world will cause a double crunch in demand for water and energy in the coming decades, the UN said Friday.
In a report published on the eve of World Water Day, it said the cravings for clean water and electricity were intertwined and could badly strain Earth’s limited resources.
“Demand for freshwater and energy will continue to increase over the coming decades to meet the needs of growing populations and economies, changing lifestyles and evolving consumption patterns, greatly amplifying existing pressures on limited natural resources and on ecosystems,” the report said.
Already, 768 million people do not have access to a safe, reliable source of water, 2.5 billion do not have decent sanitation and more than 1.3 billion do not have mains electricity.
About 20 percent of the world’s aquifers today are depleted, according to the report.
Agriculture accounts for more than two-thirds of water use.
The World Water Development Report, the fifth in the series by the UN Educational, Scientific and Cultural Organisation (UNESCO), is an overview collated from data from scientific studies and investigations by agencies.
It said ever more freshwater will be needed for farming, construction, drinking, cooking, washing and sewerage, but also for energy production — 90 percent of which uses water-intensive techniques today.