Actually, we do have less fresh water available than we used to. Ancient aquifers are rapidly being drawn down all around the world. And the recharge rate on fossil water is so slow, it is essentially a non-renewable resource. Once you pull that water out, it's gone.

Also, as glaciers melt away, the year-round supply of fresh water they used to provide goes away too. Again, less water is available.

And higher average temperatures dry things out faster. The evaporation of fresh water impounded behind dams is higher, so not only are the droughts longer, they take away more of the water we have in storage. There are too many examples of this to list, but a couple you may have heard about are the City of Atlanta's reservoir and lakes Mead and Powell.

Sorry to be so full of good tidings.

Certainly your statement about us having the “same” amount of water is true. The problem isn’t a shortage of water, it’s a shortage of “fresh water”, as many of the freshwater aquifers are being overdrafted and drying up leading to shortages in those areas. The aquifers as well as snowpack are the 2 major ways that freshwater is stored, the depletion of either of these sources of freshwater is an immediate problem for those communities that are dependent on those reserves. Yes, as one area loses freshwater, another area of the globe may gain, but not necessarily. Any loss of freshwater may end up salinated water in the oceans….

[thehill.com]