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Rolling_on_the_river t1_iy2boa1 wrote on November 28, 2022 at 5:07 AM

Reply to comment by RainStorm13 in Plumbing back ups in two spots. by 403carpenter

I have reasons to believe the problem lies elsewhere.

In my house I have this pipe that's connected to the system. This pipe is capped with some sort of de-pressuriser. This sometimes smells like sewage. Could this be the culprit?