In the begining of my research it seemed everyone said to bury my underground pipes from my OWB only about 12" down - in the frost line - to keep them away from the water table. I was shocked at first as we always burried "normal" water lines 4' down to prevent frezeing. But keepign the insulated pipe away from the water table made a lot of sense. BUT lately, I am seeing several posts with people talking about buring their pipes 3 or 4 feet underground. Is there a concensus on this topic?