Sagging Sewage System Strains-- Filth adjustments can build your drain line to sag. When this occurs, the segment that has sunk accumulates paper along with waste bringing about a blockage.??????? ??? ?????? ???????????? ??????????, ?? ????? ??? ?? ??????????? ??? ?????????? ??? ?????? ???????? ??? ????????? ??? ???? ?????? ???.?? ?????? ???????? ?