There are several things against that happening.  First off, we are still one of the biggest economies in the world.   Second we have any number of resources that we control, if the environmental wackos will let us have access to them.  We also have some of the brightest minds in the world.   
There are some legitimate uses for bottled water.   If it is outlawed what do you do when you have problems with the city piping or problems with a well?   How about a natural disaster?  I admit it is kind of weird going with bottled water when you have perfectly good tap water, but not everybody does all the time.