NASA has been recycling crew urine for decades, as has the Russian space program on the MIR space station. This is nothing new and fairly simple to do on a small scale. Water is heavy, and it still costs about a thousand dollars a pound to lift anything into orbit.

All water on earth has been recycled, both fresh and salt water have been on the planet for billions of years. Nearly all our water was deposited here by comet impact during the youth of the solar system.

The water in the Floridan Aquifer, the huge underground artisian fresh water sea about 1000 feet below ground that provides most of the water we drink in Florida and a few other states. has been determined to be about 100 million years old. Some time ago they injected tracer dye into the Floridan to measure its speed of movement between wells in order to estimate its age. Obviously, that means that the water we now drink was once pissed in by dinosaurs. There has been very little new water added to our planet in a very long time.