Monday, August 13, 2012

Study: Demand Quickly Outstripping Water Supply

Posted By on Mon, Aug 13, 2012 at 9:21 AM

Degree to which aquifers important for farming are under stress.
  • Nature Magazine
  • Degree to which aquifers important for farming are under stress.

New research shows that underground water depletion is happening more rapidly than once believed. Researchers found that while 80 percent of the world's aquifers were being used sustainably, heavy exploitation of water in other areas of the world are threatening the livelihoods—and sometimes lives—of millions.

The study warns that the depletion threat to aquifers is calling for better water management in a number of regions.

"The relatively few aquifers that are being heavily exploited are unfortunately critical to agriculture in a number of different countries," study author Tom Gleeson from McGill University told Reuters. "So even though the number is relatively small, these are critical resources that need better management."

The threat is mostly concentrated in Asia, reported the Los Angeles Times, with Mexico and areas of California also in critical stages of water depletion. Additionally, Saudi Arabia, Iran, northern India and parts of northern China were found to be using groundwater unsustainably.

In all, 1.7 billion people are said to live in regions that may be under threat of water depletion. More than 99 percent of the world's fresh water that is not frozen is found underground.

The study was published in the journal Nature.

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