Sameer, I share your concern, ...

Sameer, I share your concern, but California Central Valley perhaps is not even in a position to afford NOT to desal sea water. See below quote - I dont know if you have ever visited the inland of California. It is very very thirsty, arid land. See another content, in 2014. "The Panoche Water District and Drainage District serves over 44,000 acres of the Valley in and around Firebaugh, which includes farms growing almonds, tomatoes, melons, asparagus, pistachios and alfalfa. Panoche gets water from the Bureau of Reclamation out of Shasta Dam in Northern California which travels through the Sacramento River to the Delta region and is pumped into the Central Valley Project delivery system in Tracy, Calif. It then travels about 45 miles to the San Luis Reservoir. There is saline in the irrigated water, and lack of drainage in that part of Fresno County causes a major problem. The saline levels in some of the water have a content greater than seawater."