Sagging Sewage Procedure Lines-- Filth alterations can produce your drain line to sag. When this happens, the portion that has sunk accumulates paper and also squander leading to a blockage.??????????? ??? ????????? ??? ??????????? ??? ??????????? ??? ??? ????, ???????, ??????? ? ??????, ???????????? ?????????? ?????????? ??? ??????? ?? ????????? ?