It's already happening, but they're expensive and slow to come online: http://www.noozhawk.com/article/santa_barbara_desalination_plant_water_drought_20140131

It's already happening, but they're expensive and slow to come online: http://www.noozhawk.com/article/santa_barbara_desalination_plant_water_drought_20140131 http://www.noozhawk.com/article/santa_barbara_desalination_p... http://www.mercurynews.com/science/ci_25859513/nations-largest-ocean-desalination-plant-goes-up-near http://www.mercurynews.com/science/ci_25859513/nations-large...