Ah, but it's not yet drinkable.
From an article <
http://www.nanowerk.com/spotlight/spotid=15433.php>: "Han (the name of one of the researchers) points out that the present mechanism cannot be applied to the removal of neutral organic compounds. So, to obtain truly drinkable water, conventional methods for removing neutral compounds, such as charcoal absorption, should be used in combination with this method."
That's always the problem in a survival situation: You can get the biologicals out by heating, but the organics remain intact -- and possibly deadly.