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Knotty Naughty
Jul 11, 2003
You know the little valve-like thing at the base of a toilet? Every so often, my toilet's bowl will start bubbling and huge amounts of bubbles (no water) will seep out of that valve. If I flush the toilet, it either backs up or bubbles come out of the shower drain.

I think the bubbles are from the laundry machines somewhere else in the building. It doesn't really hurt anything, superficially at least. Is this something to worry about?

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Knotty Naughty
Jul 11, 2003

monkeybounce posted:

That's something that you should be worried about. The fact that the toilet and the laundry are draining on the same line isn't so concerning but the fact that they're not actually draining is.

What is probably happening is that the drain pipes aren't slopped enough so there isn't enough force from gravity to keep them flowing causing them to back up into the pipe. When you flush the toilet, you're forcing it back out of the shower.

Right now, it's just bubbles. But think of it this way: if you can force the bubbles from the toilet to shower, what else can make its way into the shower?

That makes sense, since I'm on the ground floor. Thanks -- I'll bring it to the attention of my super.

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