There are 16,000 desalination plants on the planet , and their prices are rising . A huge water plant is under construction in Carlsbad , California . When completed it will be the largest such facility in the Western Hemisphere . Industry highlights : The remaining salty water is then pumped back into the ocean . Ocean water is ` ` a seemingly inexhaustible supply ''
There are 16,000 desalination plants on the planet , and their prices are rising . A huge water plant is under construction in Carlsbad , California . When completed it will be the largest such facility in the Western Hemisphere . Industry highlights : Ocean water is ` ` a seemingly inexhaustible supply ''