My nephew just puchased a house that's about 9 years old. He has a metal water hydrant on the back of his house, but the handle to turn it on is at an angle to the exterior wall of the house, and this makes me think it's NOT a frost free hydrant.

He removed the tiles in the suspended ceiling in the basement and could only see white plastic tubing with no shut off valves in sight.

The woman who owned the house before him says she doesn't know anything about it.

I have no experience with PVC water supply tubing, and I'm wondering if an indoor shut off valve isn't necessary with PVC water supply piping because there's enough elasticity in the plastic to stretch and shrink as the water freezes(?)

Any advice on what to do in this situation would be very much appreciated.