Extra-terrestrial recycling

For a mere $250m NASA has built a water processor for the space station which will recycle astronauts' urine and sweat into drinking water, saving the need for around 7 tonnes of water to be rocketed up there every year. Astronauts who've tried it say it is flat and has no taste (I am not sure why they thought it might be sparkling). It won't be ready to use straightaway: samples must be returned to earth for analysis and clearance first. (Fancy working as a taster there?) The processor will be vital when the shuttle fleet is retired in 2010 as that has been the conduit for all the water on the station, except that which has been brought up by the Russians.