Water from the washing machine goes into the bathtub
It's always unpleasant when the washing machine doesn't work the way it should. If the water in your bathroom rises when the washing machine is drained, then you risk not only the safety of your household appliances, but also the appearance of the bathroom itself, which can become filled with sewage. Let’s figure out why the waste liquid from a “household aid” may go into the bathtub rather than down the drain, and how to deal with it.
Wrong tee
When water from the washing machine goes into the bathtub instead of going into the drain system, experts first of all recommend paying attention to the sewer tee. What exactly could happen to the sewer pipe tee?
If, while draining the washing machine, a stream of water rapidly flows into a pipe with a tee installed at 90 degrees, then the waste liquid will begin to fly apart, regardless of how exactly the sewer pipe is installed and what its diameter is.
This happens because sewage from the SM leaves household appliances at high speed, hits the tee and is divided into two streams, one of which goes to the drain, and the second rushes to the bathtub.
Further, the flow of sewage directed towards the bath raises the water level due to the fact that the liquid collects and is not able to leave as long as the drain is active.
When the flow of liquid from the washer stops, the sewage will finally go down the drain.
What to do in such an unpleasant situation? If the reason lies precisely in the wrong tee, then only buying a new part will help. You need a tee that will smoothly distribute the flow of water so that it does not cause water to rise into the bathtub.
The culprit is a blockage and an air lock.
It should also not be ruled out that a normal pipe blockage is to blame for the rising water. This may happen because dirt has partially clogged the sewer pipe. In such a situation, a partial blockage significantly narrows the pipe, so the waste liquid simply does not have time to completely go down the drain, and instead accumulates in the pipe.
After this, a reverse outflow usually occurs, due to which the liquid goes to the bath and begins to rise upward. In this case, the water under its own gravity will be able to go down the drain only after the flow of sewage from the “household assistant” stops. Eliminating the cause of the problem is very simple - just remove the blockage with strong household chemicals to clean the pipes.
You can use “Mole” products, which are usually not very expensive, but are extremely effective in cleaning pipes from contaminants.
The possibility of an air lock cannot be ruled out either. Such a nuisance occurs in a situation when a powerful flow of waste liquid from the washing machine drains into the sewer at high speed and thus creates an air lock. If this happens, the plug raises the liquid in the bathtub siphon, which begins to flow upward.
This happens due to the lack of ventilation in the sewer system, so to correct the problem you will have to partially redo the sewer system. Unfortunately, this is not always possible, because major repairs usually take place according to a schedule, and not at will.
Slope and diameter of sewer pipe
Finally, the reason may lie in the laying of sewer lines, for which people often use pipes of different diameters. For example, a user in the house may have one diameter of the pipe that goes from the washing machine to the bathtub, and from the bathtub to the riser it is completely different, which is why there is a transition from a smaller diameter to a larger one or vice versa.
Pipes are usually placed in grooves, sometimes switching to a reduced pipe diameter, which allows the grooves themselves to be smaller in some places. This is most often resorted to because there is no other option, for example, the screed in the bathroom is less than the required thickness for a deep groove, but this also leads to problems with household appliances.
The slope of the sewer pipe can also affect the difficulty of lifting sewage into the bathtub. This happens due to insufficient slope, or even due to its absence. For a 50 mm pipe in a sewer, the slope must be 2.5-3 centimeters per meter of pipe.
If the sewer system in your house was laid with errors, then it will not be possible to simply correct the situation. This is due to the fact that sewer lines will have to be redone, which is usually only possible during a major overhaul.
It's always unpleasant when the washing machine doesn't work the way it should. If the water in your bathroom rises when the washing machine is drained, then you risk not only the safety of your household appliances, but also the appearance of the bathroom itself, which can become filled with sewage. Let’s figure out why the waste liquid from a “household aid” may go into the bathtub rather than down the drain, and how to deal with it.
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