Our population grew nearly 2% this year! That is unsustainable, especially when the people go to places that do not have the natural resources to support the population. Miami would love to pipe water from the rural areas of N. Fla. where that resource is currently plentiful, and eventually they will get what they want because developers lead and the Republican government follows.
It is not just the heavily urban areas that are growing here either. Our small cities are becoming big cities and are losing the very qualities that have drawn the people to them. Only the weather remains... Of course, we have surprise weather that people find unpleasant too!
Florida and Arizona share a common trait that is telling. The majority of their population were born in other states. A big problem with both states is growth. Less than 40% of Florida's population was born here. (perhaps we need to build a wall) If Florida's native New Yorkers went home we would lose nearly 10% of our population!
I contend that the problem is not the lack of water, so providing more water won't fix it.