Septic Odor

[robert shawn]

We have just moved into a newly constructed house (2 months). Every time it rains steadily, we get an overpowering hydrogen sulfide odor in the bathroom closest to the septic. We have tried to figure out where the odor is coming from and failed. We are exceedly puzzled and worried about this problem and need advice.Here is what we have tried so far:1. Opened the septic clean out which is a 4 PVC opening that is located between the septic and the bathroom, it does not seem to smell as bad as the bathroom and did not prevent the smell from re-accumulating when we closed the bathroom window and turned off the ceiling fan.2. Drilled a hole thru the wall near the vent assembly to determine if there is a leak in the vent pipe to the roof– no smell.3. Smelled all the drains in the bathroom– no obvious smell.4. Shot water thru the vent on the roof and saw it course thru to the septic to check that the roof exhaust vent was connected and clear — no apparent problem.It is clear that this has something to do with rising ground water and we since we cannot find how the odor is getting into that room and no other room, we are worried about some environmental hazard under the slab.Can anyone help?

[Ron Mandel]

: We have just moved into a newly constructed house (2 months). Every time it rains steadily, we get an overpowering hydrogen sulfide odor in the bathroom closest to the septic. We have tried to figure out where the odor is coming from and failed. We are exceedly puzzled and worried about this problem and need advice.: Here is what we have tried so far:: 1. Opened the septic clean out which is a 4 PVC opening that is located between the septic and the bathroom, it does not seem to smell as bad as the bathroom and did not prevent the smell from re-accumulating when we closed the bathroom window and turned off the ceiling fan.: 2. Drilled a hole thru the wall near the vent assembly to determine if there is a leak in the vent pipe to the roof– no smell.: 3. Smelled all the drains in the bathroom– no obvious smell.: 4. Shot water thru the vent on the roof and saw it course thru to the septic to check that the roof exhaust vent was connected and clear — no apparent problem.: It is clear that this has something to do with rising ground water and we since we cannot find how the odor is getting into that room and no other room, we are worried about some environmental hazard under the slab.: Can anyone help?sometimes these thing can be trick to figure out. -check the clean out during rainy spell and see if water is backing up into main line. it could be blocking vent during these times causing gas back up. -I have seen nails split open drain/vents when siding is being put up, a supriseing amount of odor can come through a small split -you may want to reseat the toilet, just to be on the safe side and eliminate that fixture as a cause.

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