Originally Posted by schmenke
Sorry 555, but I'd suggest a bit of research.
The facts are that the reliable sources of fresh water worldwide are diminishing rapidly. Examples:
Underground aquifiers are depleting. Both in the arid American west and Africa, wells are having to be drilled increasingly deeper to reach water.
Much of central Asia's water supply relies on snow melt from the Himilayan glaciers which are evaporating an alarming rate (the Ganges and Yangtze rivers are examples). Similarily, much of the American Northwest relies on glacial melt water from the Rocky mountains which have all but vanished. The schmenke family visited "Glacier National Park" in Montana this past summer, and guess what... The glaciers had vanished long ago :s . Similarly, if anyone wants to set foot on the famous glaciers near Jasper, Canada, I'd suggest you do it soon, because they will be gone in our lifetimes.
The Colorado River is so dry that its waters no longer reach the ocean.
Google mt. Kilimanjaro in Africa and you'll see that Africa's only glacier, supply for much of that region's fresh water, has all but disappeared.
I could go on...
Desalination plants are expensive construct, but are even more expensive to operate. They require an enormous amount of energy which many countries simply can't afford, not to mention the obvious environmental impacts.