Folks in the inner cities may quickly die off, but the heartland...not so much.
I would just need to rig a hand pump to my well. If that failed, the groundwater in my area is about 5 feet below the surface.
Folks make big, sweeping statements all the time, so I gotta ask: what do you base this on?
Do you have some inside information that others lack?
Do you possess knowledge that others do not?
I ask this because your comment is very, very optimistic.