There are Seventeen desalination plants on the planet , and their numbers are rising . `` We are making progress in the USA , but the countries around the Persian Gulf are way ahead in the use of desalination , primarily because they have no alternative supplies of freshwater . '' A huge desalination plant is under construction in California , Carlsbad . When completed it will be the largest such facility in Mediterranean . Water expert : Ocean water is `` a seemingly inexhaustible supply ''
There are Seventeen desalination plants on the planet , and their numbers are rising . A huge desalination plant is under construction in California , Carlsbad . When completed it will be the largest such facility in Mediterranean . Water expert : Ocean water is `` a seemingly inexhaustible supply ''