Well, actually, only two, right now. The construction of the third, which will be even larger than the two that are already in operation, began today; it will begin producing fresh water from the Mediterranean in 2013.
This is a nice story, but it has deeper layers to it. For years one of the standard stories about Israeli ineptitude, incompetence, inability to see beyond immediate political considerations and make long-term plans, and general stupidity, focused on the lack of water. The Sea of Galilee has been over utilized for decades, seawater has been seeping into coastal wells, sewage seeps into reservoirs - the works.I expect the stories were all true and justified. But then, a number of years ago, someone decided to get their act together, and within about a decade, the situation will have been turned on its head, all for the better. This fits a thesis I offer from time to time, that sooner or later Israelis notice major problems they're faced with, and purposefully set out to deal with them.
The minister who set the rectifying in motion in this case, was - if memory serves - one Avigdor Lieberman.
Reduced Israeli reliance on rainfall and its derivatives will someday make reaching an agreement with the Palestinians easier. So that's good, too. (And the doing of Lieberman?)