Not sure any place will be safe from water shortages for much longer with climate change reducing the amount of rain falling where it can be collected to avoid the costs associated with processing sea or ocean water. If TSMC really wants to secure water for its fabs, it should plan to build a desalination or waste water treatment plant instead of going to places that currently have some water reserves since those reserves may not last long.
Harris was likely correct when she predicted that WW3 will be waged over water.