hey there all i was just reading up on water shortage crises and mobile water units and i couldnt find anything anywhere in the world and i found this website http://www.geneco2009.com a small engineering company in new zealand? and it displays products they sell and theyve got listed desalination units? i enquired about these units and they can make them biger and to order and they claim they can produce 1 litre of fresh clean h2o out of salt water pond, lake, river water e.t.c for 0.0015 cents USD. i mean isnt that cheap? or is there anything out there more economical then these advertised units? could someone maybe whos researched this let me no?