Primarily for emergency water.


Looking at your post, I'm wondering if bacteria and viruses are going to still be a problem.
Our (mine and his) water ideas are similar, and if he is planning on harvesting from his heavily mossed and likely fungus/mold-carrying roof, he will have to be careful, in my opinion.
1) large coarse filter/screen for sand and grit
2) filters, like Brita or charcoal or such.
(store-bought filters seem like an expensive way to go, especially if we're thinking long-term or large quantities. it's just one man and a small dog, but still...?)
3) boil?
4) let cool and enjoy.

I'm thinking that boiling the water can't hurt (other than requiring fuel/energy for the fire/heat), but wondering if it is needed.