Geothermal

If one has hot ground (water flowing or not, doesn't matter) near where one lives then a distillation tent can be set up. This could use the cooler air (could be water though) around it to condense the water on the inside of the tent. A water holding container would be constructed over the floor of the tent. Water evaporates from the hotter floor and condenses on the inside of the tent to run into collection troughs and then containers. The temperature doesn't even have to get up to boiling, just say 10 to 20 degrees Fahrenheit hotter than sounding air could be enough to use the distillation process. The hotter the faster the distillation process.

This is very simple in its construction. One needs PVC-Pipe, PVC- fittings, and plastic tarps; a flex tube and container to collect the distilled water; a little silicon rubber to make the seal where the hose goes through the plastic; a funnel to fill it; adjacent sources of heat and coolness. The greater the difference in temperature, the faster water can be distilled. The limited life of plastic tarps could be a disadvantage. Clear thick vinyl might be the longest lasting. Any plastic may leach out some toxins (plasticides) into the distilled water. This would become less with usage, and this may be a better alternative than lead poisoning. Still in its infancy, this idea can be developed within the next two years, if you think that your group will have access to post-pole shift geothermal energy.

Offered by Mike.