Sagging Sewage Process Lines-- Grime alterations can develop your drain line to sag. When this happens, the portion that has sunk accumulates paper in addition to squander leading to a blockage.?????????? ????????, ????????????? ??? ???????? ???? ?????, ???????? ? ???????:– ????? ??????????????? ??? ?? ?????????? ??? ?? ??????? ??? ??????? ??? ??