most of the non-dark-matter non-dark-energy mass of the universe finds itself in conditions that prevent the existence of water: black holes, degenerate-matter stars, conventional plasma stars, things like that. almost all of the rest is hydrogen and helium, so water exists there in the same sense that uranium exists here. but, although almost all of the universe is cold enough to freeze hydrogen, its vapor pressure is high enough at the cbr that most of it is vapor, so basically none of that is solid. solid objects do have a substantial amount of water in them, although if our solar system is typical, many of them don't

but sure, if it turns out that there are electron-degenerate-gas vortex intelligences on the surface of white-dwarf stars, they could very likely work out some way to launch robotic probes out of the star into places where water could exist, so that they could measure its triple point. and the folks on 𐍨𐍓𐍰𐍚𐍠 use trace amounts of water in their biology (it's a reasonably powerful base) and have isolated it in liquid form in their cryogenic laboratories. it's accessible in a way that the artifact kilogram and artifact meter and the circumference of the earth aren't