I am very interested in this subject, since I live in Arizona. In a few generations, our ground water will be close to gone. It was incouraging to read of Israel's technology in desalting and filtering sea water and in an afordable way. Also the technology of water recycling and treatment. If our government would give as much thought to the subject as the Isreal government, we would not have the water shortages that now take place. Israel no longer has to worry about water shortage with population increases. In my state, water is something most people worry about.