Why when you flush the toilet it comes up in the bathtub?

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asked Dec 8, 2021 in Maintenance/Repairs by Repiid (1,100 points)
Why when you flush the toilet it comes up in the bathtub?

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answered Dec 8, 2021 by Adf289 (58,200 points)
If you flush the toilet and the toilet water backs up into the bathtub or sink then the clog is somewhere between the toilet and the tub or sink drain line.

In most cases the toilet, bathtub and sink all connect to the same drain which then leaves the house connected to the main sewer line.

Your toilet drain line has a few other connections that are then connected to the sink, tub etc,

So most likely the clog is in the large pipe after it leaves the toilet drain.

When flush toilet water comes up in the tub, it means the blockage is located somewhere past the point of connection.

Otherwise, water would simply back up in the toilet.

The tub drain is usually at a slightly lower elevation than the toilet, so it provides a way for the flush water to get out of the pipe.

Baking soda and vinegar can clear and unclog some toilet clogs.

However if the toilet clog is more severe then you may need to use a toilet plunger, toilet auger or if it's really severe you may need to replace the toilet.

The clog may also be down the line before it reaches the actual sewer line to leave your house or the clog may be between the toilet sewer line and another part of the sewer line.

If the clog in the toilet isn't too severe or if the toilet isn't clogged by something such as a toy etc then baking soda and vinegar can work to naturally unclog a toilet.

To unclog a toilet using baking soda and vinegar take a cup of baking soda first and pour that down the toilet then if the toilet doesn't have too much water in the toilet bowl pour some boiling hot water down the toilet and then add some vinegar from the bottle slowly and allow it to sit for 30 minutes to an hour.

Then try flushing the toilet again.

If it doesn't flush yet then you may need to try plunging it to help the clog along through the pipes and then might have to use the baking soda and vinegar solution again to fully clear the clog.

If none of that works then the clog is more severe and likely needs a toilet snake or the clog could be further down the drain.

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