Virtual water export during drought - what are sustainable solutions?

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Joe S. Whitworth writes:
The United States is the third largest exporter of water in the world -- a wild thought against the backdrop of a national drought.

To read the full article:

http://www.huffingtonpost.com/joe-s-whitworth/water-footprint_b_1775976.html

Regarding consumption, import and export of virtual water, please take a look at this fabulous info graphic published in Scientific American:

http://www.waterfootprint.org/downloads/2012-06-ScientificAmerican.jpg

as well as the graphic published in the Guardian:

http://www.waterfootprint.org/downloads/2012-TheGuardian-VirtualWaterFlows.gif

Some try to find sustainable solutions, e.g. farming without water

http://www.cuesa.org/article/farming-without-water

Are there other solutions you can think of?