I'm asking because I want to know where to apply heat to keep pipes from freezing in winter if I am ever away and want to turn the heat way down.
I live in a townhome with no basement. There is a round water cap (shutoff valve) in the apron of my driveway. I am assuming (correct me if necessary) that there is an underground pipe the goes from this round water cap straight towards the house. If this is the case, the pipe would continue (underground) into my house under the wall between the garage and the foyer on the first floor, where it meets a faucet that is coming out of the wall between garage and foyer. I also assume the pipe stays underground while it continues about 8 more feet and pops up out of the cement floor next to the water heater, and branches into various copper pipes going all over the place.
My question is about the piping in the wall between the foyer and the garage. Is the piping all underground except for the part that pops up for the faucet? (The other possibility is that the piping pops up as soon as it gets within the house, and runs horizontally through the wall to the faucet, above ground.) The pipe for the faucet is inside the wall, and I can't see through the wall, of course, to see if the pipe goes under ground there.
Thanks for reading this long post! (If you did)