I cut into what I was almost positive was the sewage basic exhaust to the ceiling. There was a lot of water that came out so I ran and shut off my main. It stopped so I opened my main again real quick - no water. I read that condensation can build up and come leaking out pretty profusely. Just wanted to confirm before I do more work.

yes it can but not a tremendous amount. i would suspect more rain water rather than condensation.
P/S, if the main water shutoff affects the vent stack, you have a serious problem..

Have absolutely NO IDEA what pipe you cut, so cannot give an answer. NORMALLY, condensation is NOT going to accumulate in a pipe, if it was installed properly.

I should add that when I opened my sewage basin for the first time, there was about a foot and a half of what was probably rain water accumulated. I'm guessing from when there was just a foundation poured.

I bought the house about 2.5 years ago. Putting a bar in my basement that already has a 3 piece rough in. The main being turned on doesn't seem to be making matters worse.

Thank you!



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I'd say that you cut into the discharge from the pump, there is a check valve to keep water from draining back into the basin so that pipe is usually full of water.



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You probably cut into a "future" vent intended for the basement bathroom once it is finished.