apparantly.
In regards to Myroria's comments...
Rivers might be polluted. Nations might not have the technology to distill the water out of seawater (you need plastic or glass, as well as some sort of fuel for your heat source) I'm sure there are other examples that aren't coming to me...
Oh, and distillation needs to happen on a large scale, not the laboratory distilation that I was envisioning. This means you would need suction pumps, which require electric power, steel for a pipeline, concrete to build the facility itself, and a distribution system.