Don't try this at home - Drinking water from urinehttp://community.machinedesign.com/blogs/editordesk/archive/2009/03/11/don-t-try-this-at-home-drinking-water-from-urine.aspxHere's how NASA does it on the Space Station. http://www.space.com/common/media/video/player.php?videoRef=081119_RecycledUrine&mode =enCommunityServer 2.1 SP1 (Build: 61025.1)