On the space station, people will wash their hands with less than one-tenth the water that people typically use on Earth. Instead of consuming 50 liters to take a shower, which is typical on Earth, denizens of the ISS will use less than 4 liters to bathe.bove: One of the nodes that will become a part of the Space Station. The ECLSS life support equipment will be housed in Node 3, which is scheduled to be attached to the station in October 2005. Lost water will be replaced by carrying it over from the Shuttle or from the Russian Progress rocket.