It definitely can't be as difficult as the water supply problems of Singapore which imports more than half of the stuff from Malaysia and yet it's one of the most competitive places in the world year after year. They've managed this one with NEWater (recycling waste water), desalination and increasing the water catchment area. That sounds like uber problem-solvers at work, doesn't it?
And how does going to ocean depths to run our air-con sound? Un plaisir, sans doute...