[xoxoxoBruce]

Perverts.

I should think with all the sun Australia gets, solar desalination plants that use the steam to make power would be a good bet.
You don't have enough water and never did, so the future is even worse just from population growth.

When I say not enough water, I mean to exploit the agricultural possibilities you have. You could be very wealthy feeding all those Asians. I think food and water are going to become all the more valuable in the foreseeable future.