Our house reeks of sewage after a hot shower. It is much worse in the winter when temperatures are colder than the summer. Our basement is plumbed for a bathroom (since summer of 2020 when we moved in). We have not finished the basement or added a bathroom so the sewage injection pump hasn't been turned on. Can the smell be coming from that pump? We've changed out the hot water heater with no luck. Any suggestions are appreciated. We also have a vapor barrier with a sump pump, but the occurrence that coincides with a hot shower makes me think it isn't the sump pump. Any and all advice is appreciated!
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When you say that the basement is "plumbed" for an extra bathroom, do you mean that the rough plumbing is in? This is what I'd look for, in order of most likely to least likely:
- The rough plumbing is not capped, the p-traps are not installed, or the p-traps are dry.
- The rough plumbing does not have adequate vents, and using the shower is creating a vacuum, pulling the water from the p-trap.
- There's a leak somewhere in the drain, where gasses can escape and the hot shower is just helping the gases come out faster.
Cheery
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