Now that the notion of catastrophic, AGW has been discredited, is 'Water' the next 'cause'?

Neither one has been discredited. The 'greenhouse effect' becomes more robust every year as we add more CO2 to the atmosphere and every years there are more demands made on water supplies world wide. People have settled where there is water, and climate change could very well destroy that balance between people and the availability of water...or it could flood them out. As an example here in western Arizona every year we have more people. This requires burning more fossil fuel to keep the air conditioning on. Every ton of burning anything adds CO2 to our paper thin atmosphere. Without air conditioning there would be no living here six months out of the year. More people mean more water use and the water available isn't enough now, much less for a growing population. ignoring the obvious doesn't seem like a smart thing to do. Moving on to 21st century technology to keep the lights on and the wheels on the road makes more sense. Water is another situation...when that goes below a given point in the American Southwest this area will die...then what?