That is an easy fix.
Laundry tub drain backing up.
The drain pipe is usually 4 inches in diameter but can be as small as 3 inches.
So you probably have a main line clog if you.
The drain water normally should never enter the house again either through the washing machine s drain or another drain.
If you have this problem here is video to show how to easy do the job yourself.
Initially it was draining slowly and backing up in a nearby sink on the same level they share a drain pipe the nearby sink would fill to a certain level then immediately drain quickly with a big whoosh i asked my husband to snake the laundry tub for me and also the nearby sink.
Flush the toilet and the water backs up into the bathtub or shower drains.
There is an obstruction or blockage in the pipe and this is causing the flooding.
Instead of water backing up at the kitchen sink kitchen water backs up in the basement when the laundry sink is clogged.
Your washing machine s drain water feeds down a drain pipe like all of the other plumbing fixtures in your house.
Clogs in drain pipes or vent pipes allow drain water to seep back into the house.
When the washing machine pumps the water quicker than the floor drain can handle it will back up and flood.
The washer drains with positive pressure.
The pressurized water goes into the open top tube down into the sewer.
In all likelihood it is a trap stoppage.
In many cases hair clogs the tub s drain which in turn causes water to back up.
For most homeowners it s an inevitable fact of life that a drain in their home will eventually become clogged.
In many cases a strainer on the drain hose may have become clogged.
This main sewer drain pipe under the yard is connected to the main drain inside the house which accepts the wastewater from the individual branch drains serving each plumbing fixture including sinks tubs showers and toilets as well as the washing machine.
Now its completely clogged.
When the washing machine pumps water up into the sink the smell is not to goo.
If either is backed up revert back to the paragraph above.
Unfortunately and depending on which drain or section of piping in the house has become clogged backups into the bathtub could result.
It may be that a floor drain is also on this same pipe when there is this floor drain will be the place where the slow drain will evidence itself as a pool of water appears there every time the clothes washer drains.
When your main drain line is clogged water has nowhere to go but back up into your home.
The first step is to shut off the machine and not panic.