It's my home... there is a war going on over the remaining water. Magical means is not an option for solving it. I think there is one artefact that can create water from nothing, but I have never seen anyone use it and it might just be a myth. I just know I... people killed for it. Water also doesn't seem to last when it is on the surface because the sun is expanding rapidly and has grown closer to Earth than what is normal for other worlds.