If you had water in outer space inside the space station, or any thing which is pressurized like an air plane, you could make some really big 'drops' of water which would float around, unless they hit something. If you released some water outside of the space station it would vaporize really quickly. Think if any movie you've seen where a plane gets a hole in it and everything gets sucked out. The water in space would all get sucked apart from itself, just like that.