The Middle East, north Africa and south Asia are all projected to experience water shortages over the coming years because of decades of bad management and overuse.
Watering crops, slaking thirst in expanding cities, cooling power plants, fracking oil and gas wells – all take water from the same diminishing supply. Add to that climate change – which is projected to intensify dry spells in the coming years – and the world is going to be forced to think a lot more about water than it ever did before.
The losses of water reserves are staggering. In seven years, beginning in 2003, parts of Turkey, Syria, Iraq and Iran along the Tigris and Euphrates rivers lost 144 cubic kilometers of stored freshwater – or about the same amount of water in the Dead Sea, according to data compiled by the Grace mission and released last year.
A small portion of the water loss was due to soil drying up because of a 2007 drought and to a poor snow pack. Another share was lost to evaporation from lakes and reservoirs. But the majority of the water lost, about 60%, was due to reductions in groundwater.
In south Asia, the losses of groundwater over the last decade were even higher. About 600 million people live on the 2,000km swath that extends from eastern Pakistan, across the hot dry plains of northern India and into Bangladesh, and the land is the most intensely irrigated in the world. Up to 75% of farmers rely on pumped groundwater to water their crops, and water use is intensifying.
Over the last decade, groundwater was pumped out 70% faster than in the 1990s.
The Pacific Institute, which studies issues of water and global security, found a fourfold increase in violent confrontations over water over the last decade.
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