Two structures.
The getaway is a new well, new pipes, with a new hand pump. They still make ‘em. I do have to filter for drinking water, and I have a Big Berkey™ Water Filter, counter top model for that. You could put ditch water through it and its drinkable.
That is neat. I have a couple of water filters for emergencies that are meant to make nasty water safe. Essential equipment as far as I am concerned
When I read your description it made me think of old log cabins that my dad owns. We loved them when we were kids in the 1960s. Unfortunately they are now falling apart from lack of maintenance. They originally had lead pipes and the water came from a creak behind them. Those old lead pipes outlasted steel by a factor of about ten, but they leached lead oxide into the water.