Here's something interesting to those who are interested in having self reliant source of water.
A device which condenses the water vapour from the air and filters it and sotres it. Seems a neverending source of water if your air is humid enough....

Off side is that you electricity to run it and the filter needs to be changed about once a year. Of course I suppose you could always divert the water to another type of filtration device if necessary.

See it here : Hyflux link

Works in humidity of 70% (min I think)