...and then comes down as rain somewhere else, eventually.
> somewhere else
Typically the ocean.
So it is being reused for irrigation!
If that somewhere else is too far away it won't help refill South Carolina's aquifers.
Charleston is over the Florida aquifer system, which is one of the largest aquifer systems in the world since the peninsula is essentially a huge sedimentary filter that's saturated by really aggressive storms on a seasonal basis
It might need chemicals so it doesn't rust or freeze pipes
Or even put through a system to dissipate heat and reused
Do they have or are they building the infrastructure to do that?