There is a LOT of water in many places in and out of our solar system. I think it is ludicrous to think there is no water throughout the universe. Hydrogen and oxygen are very common elements and water can and will form just about anywhere.
https://www.nasa.gov/jpl/the-solar-system-and-beyond-is-awash-in-water
https://www.nasa.gov/jpl/the-solar-system-and-beyond-is-awash-in-water