How can the toilet return water?

Toilet backwater refers to the phenomenon that the drain pipe flows to a certain extent and then returns to the bathroom. Usually, the backwater in the bathroom is a problem caused by the blockage of the pipeline or the flow exceeding the capacity limit of the pipeline.

The first is the pipe blockage. The drain pipe in the bathroom is easily blocked by paper, hair and other sundries, which leads to the reduction of pipe flow or complete blockage. When the pressure accumulates to a certain extent in the process of water flow, the fluid will form a water hammer in the pipeline, and then the speed of water flow will slow down and reverse flow will occur, which is what we often call backwater.

Secondly, the pipeline capacity is not enough. In some old residential areas, sewage pipes are usually very narrow and the flow rate is limited to a low level. If the amount of water discharged exceeds the capacity limit of the pipeline, the toilet will return to the water. This situation generally occurs at the intersection of washing machine, kitchen drain pipe and bathroom drain pipe.

Other reasons include valve failure, toilet gas pipe blockage, and unsmooth turn of sewer pipe. All these problems will lead to stagnation.

In order to avoid backwater in the bathroom, we need to prevent sundries from entering the drainage pipeline, clean the pipeline regularly, and the design and installation of the drainage pipeline should also comply with the relevant national regulations, so as to make the pipeline design and installation reasonable. If there is backwater in the bathroom, it is recommended to contact a pipeline maintenance professional immediately for inspection and treatment to ensure the normal use of the bathroom.