Why Do Bubbles Come Up in My Toilet When Water Is Dumped in Another Drain(laundry or Shower)?

Question Asked by tbracoapland: why do bubbles come up in my toilet when water is dumped in another drain(laundry or shower)?
The toilet with the bubbles is upstairs. We are on a septic system and have sump pumps for the laundry and a bathroom down stairs. But it has started doing this when water is draining from the upstairs shower as well.

Best answer:

Answer by Mike H
sounds like vent pipe is clogged

Answer by Jerry
It sounds like the roof vent is plugged. Maybe a bird made a nest in it.

Answer by D2
you gotta problem with the vent stack

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