Looked at a tough one the other night.Split level, as usual , the water source was under the landing. Front steps s foot wider then landing. Finished basement to the righ of landing.Copper feed going to the tank and switch cross the garage. Real easy place to do the tap. I asked a well guy and he said If I move the check valve to before my tie in I would be fine. Otherwise the switch would not know when to turn the pump on. Anyone ever do it?