How to get rid of sewer gas odor

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How do I get rid of sewer gas odor? All of the inside plumbing is new.
  13 answers
  • Vickie Maxey Vickie Maxey on Sep 05, 2016
    You should not be smelling sewer gas. Perhaps a p trap was omitted in installation, which prevents gas from coming back into the house. It could also be a slight gas leak if you have natural gas or propane.
  • William William on Sep 05, 2016
    Agree with Vickie! If the plumbing is new either something is missing or plumbing was not installed correctly allowing sewer gas to enter the home. All plumbing fixtures should have a P trap or S trap and vent stack that terminates above the roof line.
  • Suzette Trimmer Suzette Trimmer on Sep 05, 2016
    My two cents worth is in 100% agreement with folks above! Somebody forgot something. Now if contractor does not own up or refuse to fix get ahold of the county inspectors or your area's License & Inspections. What a shame all new very 'expensive' plumbing and then THAT smell. Baking soda has it's benefits.
  • Linda T Linda T on Sep 05, 2016
    We had the sewer gas smell before the new plumbing. Plumbing was over 40 years old. I thought the problem might be from the house to septic
  • Linda T Linda T on Sep 05, 2016
    I will check with the plumber
  • Gil Paterson Gil Paterson on Sep 05, 2016
    An S trap could be dry. Try pouring water down all drains to ensure there is water in each trap which stops the gas smell from coming into home. Also could be something wrong with septic since you smelled it before new plumbing installed.
  • Esp9457745 Esp9457745 on Sep 06, 2016
    Poor water down all the drains, including the basement floor drain - dry traps allow odors. If this doesn't help, call your plumber.
  • Lynne Webb Lynne Webb on Sep 06, 2016
    My guess is that somewhere there's a pea trap missing. While my home was under construction, I lived in a camper behind. The plumbing was stubbed in for me to sort of use via a temporary set up. I remember that awful smell. I was assured as soon as everything was in place, it would go away. It did. So, if your renovation passed a county code inspection, I'd be calling somebody for a second look.
  • Susan Susan on Sep 06, 2016
    You have to pour bleach in your sink drains once in a while..
  • Jay Jay on Sep 06, 2016
    What do you mean when you say " all of the plumbing is new"? Do you mean ALL of the sewer, waste and vent pipes have been replaced starting with the sewer line outside the house, extending to every plumbing fixture and all new vent pipes extending through the roof? Were ALL of the old pipes removed? Please answer these questions and I might have some suggestion on how to diagnose the problem.
  • Linda T Linda T on Sep 06, 2016
    The outside has not been replaced. The drains from the utility room in my basement were not replace. The bathroom drains in the basement and all other plumbing including fixtures in the entire house have been replaced. The vent pipes were also replaced.
    • Jay Jay on Sep 07, 2016
      Good morning Linda, I assume that all traps ( sinks, bathtubs, showers, toilets, floor drains, washing machine stand pipe etc.) are filled with water because if they are not, that is probably the source of the odor. In order to eliminate the plumbing system as the culprit, I would suggest that you have a " peppermint test " performed on the plumbing system. It is a very simple test, but will eliminate the plumbing system as the source of the odor. For safety reasons this test should be done by someone that is experienced in climbing around on the roof. Your plumber or roofer could do the roof part of the test which only takes a few minutes on the roof. All you need is a bottle of peppermint oil extract ( less than $5.00 at drug store or grocery store) and about 2 gallons of hot water. It is important to keep all windows and doors closed, all fans turned off and AC system turned off. The peppermint oil and hot water are taken to the roof (fall protection required). Find where the main plumbing vent comes through the roof (3" or 4" inside diameter pipe). Pour the contents of the peppermint bottle down the vent pipe and then pour the hot water down the vent. IMPORTANT!! The people doing the work on the roof must NOT enter the house until after the test is complete, otherwise if they do enter the house they will probably bring the odor of the peppermint into the house with them, ruining the test. All that is left to do is to wander around the entire house to see if you detect the odor of the peppermint, this could take up to 1/2 hour to give the peppermint odor a chance to escape from a wall cavity into the house. If you do smell the peppermint, continue moving about the house to see if the odor is stronger some where else. It is probably best to have an experienced plumber sniffing around inside the house because he will know better as to where to open up walls or floors to find the source of the leak. If no odor is detected, the plumbing system is probably not the problem. Hope this helps, Jay
  • Shiley Shiley on Sep 06, 2016
    After spending $ 1800.00 on having all the pipes replaced on my sewage pump by a master plumber, the smell was the same . I decided to clean all the elbows in the sinks and tubs with liquid plumber and voila the smell was gone. Cost me under $ 20.00. The master plumber was a master crook. I now do this procedure every time I detect a smell. About every 3 or 4 months.
  • R Walter R Walter on Sep 06, 2016
    Definitely check P traps under sinks first, they may need to be cleaned out, if not one of your P traps is not holding water and letting the sewer gas thru
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