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Have a plumber snake out your drains.

ANS 2 - Install a flapper valve section on the sink drain pipe so water can go down but not up - cheap and very easy to do.

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Blocked up main soil line (sewer)

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Q: How do you stop water from coming up a basement sink drain when the toilet is flushed upstairs?
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When my sump pump stopped working why did the water pour out of the upstairs toilet and not the basement toiet?

because the upstairs toilet drain was clogged up.


Why would a basement floor drain bubble up water when the water is turned on upstairs or the toilet is flushed upstairs?

It is quite possible that your main pipe to the city sewer system has become blocked somewhere between the basement floor drain and the man city sewer line. Could be a result of items flushed down the toilet(s), or damaged pipes as a result of age, tree roots searching for water, etc. Suggest having your main access to the city sewer system checked by camera.


Why would air bubbles come up in downstairs toilet when upstairs toilet is flushed?

partially clogged drain or vent, improperly installed vent or drain


When flushing toilet upstairs toilet in basement overflows from bottom onto basement floor?

There is a blockage in the waste line. Have you flushed the basement toilet to see what happens? Try running the upstairs shower and see what happens. (use two persons , one up stairs, one downstairs so you can control the amount of water that rises in the toilet.) There should be a "clean out" cap somewhere downstairs near the point where the waste line exits the house. It is here that one would "snake" the line. The other possibility is the water level in the downstairs toilet is lower than the level of the waste line exit. This means that the point of exit of the line is physically higher than the toilet. The only remedy for this is to raise the toilet to above the height or replumb the toilet into a waste pump that evacuates upwards to a point slightly higher than the waste line. This is the most common set-up in a "basement" toilet. The toilet evacuates into a point lower than the floor. The waste pump or grinder pump then pumps the waste upwards than gravity allows it to evacuate normally. The benefit is that the waste pump creates a separate system for the basement toilet. Y-THINK-Y


Where does upstairs sink water and shower water drain to?

There is a main drain that runs from the basement through the roof where it is the vent for the system. If you look at the layout of the house, the upstairs bath is most likely over the downstairs one or the kitchen. If you look on the roof, you will see a 4 inch pipe coming through the roof that should be over the upstairs bath. The sink and shower drain into that and then to the basement and out of the house. Most likely the main stack is in the wall behind the toilet.


Why is water coming out from base of toilet and backing up into tub when flushed?

maybe bcuz to save water..


Why would waste and toilet paper back up in basement floor drain when toilet upstairs is flushed?

You have a grinder pump that boosts the sewage up to the main floor to enter the drain system. The float in this pump system is not working correctly and the standing water level in the tank is too high. Adjust the float, it will cure your issue.


Can popcorn be flushed down the toilet?

I do not know if popcorn can be flushed down the toilet. So, I wouldn't try it.- Ashton Smith


What should you do if you have not flushed an upstairs toilet for about five months and the bowl is now completely dry?

Yes you can flush it. It's possible for a toilet trap to go dry after that much time. When you flush just make sure you check to see if the bowl is leaking.


What does Roddy get flushed into In the 2006 movie Flushed Away?

The sewer


How much water is wasted when one toilet is flushed in the UK?

Depends on if it needed to be flushed or not.


Why does toilet belch when flushed?

Bad venting