@wildartist sounds like your brother is really into permaculture. That’s great, its something we want to work with on our homestead too!
@robin and @matt76
This seriously sounds like a nightmare. You have your own well, probably paid quite a bit to get it drilled and suddenly some government guy shows up at your front door and you have to install a meter that they come to check on a regular basis.
Seriously… if that would happen I would just move to a place where this does not happen if possible…
Alea iacta est ("The die has been cast")