[civilitty]

Fresh water is a precious resource here on Earth because it is so energy intensive to desalinate ocean water. Once we are capable of mining other bodies in the solar system, there is plenty of water to extractt from other planets, moons, and comets. Getting there and back has proven to be by far the hardest part so far. Either way, water and methane will be the primary hydrogen source for liquid propellant, ion engines, and nuclear rockets.

In space, life support is a closed loop system so a lot of water is recycled anyway and with aeroponics, agriculture requires 80-95% less water. Any industrial uses of water will also likely have very efficient recycling (for example, Intel's Arizona plant recycles at least 60% of their water and their company goal is to get to 100% before mid-century). I believe even now, industrial water usage is far bigger than agricultural or personal.