Another way to look at this is that water is a proxy for energy. We can replace any fresh water that is 'used' via some application of energy to the abundant s

Another way to look at this is that water is a proxy for energy. We can replace any fresh water that is 'used' via some application of energy to the abundant salt water on this planet. Soda may be a poor application of energy, but talking about it in terms of water 'used' is mostly FUD.