I live in a 100 year old house I have a surface pump in the basement pulling water from the well and everything is working fine. problem is eventually my foot valve will go bad and I have no idea where my well is I obviously know where the line exits the foundation but there is no evidence of where the well is. anyone have any ideas? the only clue I have is an old picture of the house that shows a hand pump on the side of the house in the general area that the pipe exits the house. I was just wondering if anyone knew of any way to locate the well without digging holes all over to hopefully find it.