What floor is the sewage reflux usually on?

Sewage backflow usually occurs in the basement or the first floor, because if the basement is not waterproof well and is lower than the road drainage system, it is easy to cause backflow.

Possible reasons: it may be that the vertical pipe of the bathroom is blocked by bricks, stones, decoration garbage and other items, or it may be caused by the height difference between the drainage branch pipe of the bathroom and the main drainage pipe.

It may be that the quality of the sewage lifting device in the bathroom is not good, or the models and specifications do not match, which leads to the problem of sewage backflow. It may be that the quality of the water pipe or toilet is poor, and the sewage outlet or sewage pipe is too small, which leads to the blockage of sewage in a certain place and the backflow of sewage.

Solution to the backflow of toilet sewage: pour dredging agent into the toilet or pipeline to slowly dredge the blockage in the pipeline; Secondly, observe whether there is white smoke in the pipeline and whether there is a "squeaking" sound. If yes, it means that the dredging agent dissolves the stain normally; Finally, wait a little for about 10 minutes, and flush the pipes or toilets with clean water to solve the problem of sewage backflow.

Extended data

Method for prevent toilet sewage from flowing backwards

1, pay attention to the design and layout of the sewage outlet when decorating the bathroom. The height of the sewage outlet should not be too low, but it must be higher than that of the municipal sewage pipeline.

2. A check valve can be installed at the sewage outlet of the toilet, which can improve the speed and efficiency of sewage discharge and effectively prevent the sewage in the pipeline from flowing backwards.