Sagging Sewage System Traces-- Dirt adjustments can build your drain line to sag. When this happens, the portion which includes sunk accumulates paper and waste bringing about a blockage.?????????? ??????????? ??? ????????????? ???? ???? ???????? (????????????? ???? ??? ???????? ??? ?????????? ???????????? ??? ???????? ??? ?? ????? ????? ??? ??? ??