Water from wind

EcoGeek has an interesting post about a wind-powered turbine that cools itself and condenses water out of the air. While there are doubts about the implementation, there are certainly examples of being able to condense large amounts of water out of the air, and in nearly any P-A world, getting fresh, clean water is going to be a challenge. Of course, most of these assume there isn't radioactive dust blowing around, but at least it's a good start.