Sagging Sewage System Traces-- Dirt improvements can generate your drain line to sag. When this occurs, the portion that has sunk accumulates paper along with waste bringing about a blockage.?? ? ??????????? ????? ???? ??????? ???? ??????????? ?????, ????? ?? ????? ??????? ??? ????????? ???, ?? ?????? ???? ?? ??? ?????????????.– ????? ????????? ?