Sagging Sewage Program Lines-- Filth adjustments can generate your drain line to sag. When this happens, the section which includes sunk accumulates paper and waste resulting in a blockage.??????????? ????? ??? ??? ??? ?????????? ?????? ??? ???????????? ?? ????? ????? ??? ????????, ??? ????????? ??? ??? ??????? ????????? ?????? ??? ?????????????, ?