It's not an option, but an obligation. Plus the Mediterranean sea, as polluted as it is, is not a body of water to be contended about. If Israel takes its water from its own sea shore, the grave contentions about water are less likely, except in agriculture in border zones, and small acuifiers, whose source may be in other countries. Water will be an issue in talks with Palestinians, mainly because the West Bank is an inland territory, with no significant body of water in it. (The Jordan river, whether it ends up in Paestine or Israel, is really a little drip). And then there's teh question about how global warming is going to affect Israel. Is it going to simply raise temperatures and make it even more arid, or it isn't that simple.
Justice Ministry: Information examined by AG about Gal Hirsch didn't come from police (Haaretz)
from the article: Israeli population stands at 7,695,000 at end of 2010