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Places like Saudi Arabia and Qatar have fresh water - no reason wy we can't..... Water restrictions to a degree should really be permanent (although it is nice not to have them - Newcastle), and we need a system of siphoning water from plentiful areas to drought.
What we really need is forethinking politicians who aren't afraid to spend a few bucks on securing our future, before it is truly critical.
What happens if a town of Brisbane's size runs out of water??? How much does it cost then? I think a billion or two on a pipeline/pumps etc would seem pretty cheap then!
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