I am new to this forum and wanted to know what normal plumbing is supposed to look like. I have two different pool professionals telling me two different things. We currently have above ground PVC piping, however the piping just above the ground and below about one foot is a piece of copper piping which I'm told then transitions back to PVC. Is this normal? Also, I'm being told that the best route is to dig below the ground and change the copper out to PVC. Thoughts?