Virtual water export during drought - what are sustainable solutions?

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:

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

as well as the graphic published in the Guardian:

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

Are there other solutions you can think of?