Sagging Sewage Program Lines-- Grime adjustments can produce your drain line to sag. When this happens, the part which has sunk accumulates paper as well as waste resulting in a blockage., ????? ??????? ????? ?? ????? ?????????????? ???? ??? ???????? ???, ????????????? ??? ??? ??? ?? ?????????? ???? ?????????? ??? ??????? ???.?? ??? ????? ?????????