“a water collection system “
Sadly, IIRC, I think they’ve become illegal (or almost illegal) in some areas. I think they’re monitored, discouraged, and/or taxed. California comes to mind. Not positive, but that comes to mind.
Mine comes from the roof via pvc pipe through a filter system and into storage containers in my garage. The only thing visible is the pvc pipe at the back and side of the garage and it looks like gutters unless you are right up on it.