How to Get Rid of Sewer Smell in the House

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Gina Napsin
April 13, 2024
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Are you battling a persistent sewer smell in your home? Don't let it linger any longer! The foul odor could be a sign of underlying issues that need immediate attention. In this comprehensive guide, we'll explore effective methods to banish the unpleasant scent for good.
From DIY remedies to the importance of professional sewer repair and replacement, we'll equip you with the knowledge to restore freshness to your living space. Say goodbye to sewer odors and hello to a clean, odor-free home!

Identifying the Source

To effectively eliminate sewer smell, the first step is pinpointing its origin through a systematic inspection:
  • Check Drains: Begin by examining all drains, including those in sinks, showers, and toilets. Run water down each drain and observe for any foul odors emanating from them.
  • Inspect Sewer System: Move on to inspecting the sewer system. Look for signs of blockages such as slow drainage or gurgling sounds. Also, examine for any visible leaks or damp areas around pipes.

Common Causes of Sewer Smell

Dealing with a persistent sewer smell in your house can be frustrating. The initial step to effectively resolving the problem is comprehending the typical causes responsible for this disagreeable smell. Here are five frequent causes to watch out for:
  • Dry P-Traps: The P-trap is a U-shaped pipe beneath sinks, showers, and toilets designed to trap water and prevent sewer gases from entering the home. If a fixture isn't used regularly, the water in the P-trap can evaporate, allowing odors to permeate the space.
  • Blocked Vents: Plumbing systems feature vents that allow sewer gases to escape outside. If debris or animal nests obstruct these vents, it can result in a buildup of sewer odor inside the house.
  • Broken Sewer Lines: Cracked or damaged sewer lines can leak sewage and emit a foul odor. Aging pipes, tree root intrusion, or ground shifting are common causes of sewer line damage.
  • Clogged Drains: Accumulated debris, grease, or hair can clog drains, causing water to stagnate and emit a sewer odor. Regularly cleaning and maintaining drains can help avoid this problem.
  • Faulty Toilet Seal: A damaged or improperly installed wax ring seal beneath the toilet can allow sewer gases to escape into the bathroom. Inspecting and replacing the wax ring as needed can resolve this problem.

DIY Solutions

If you notice a sewer smell in your house, there are several DIY solutions you can try before calling a professional.
  • Hot Water Flush
Begin by pouring hot water down drains to dislodge and flush out any accumulation of organic matter. This simple yet efficient technique can assist in reducing odors.
  • Baking Soda and Vinegar
Combine baking soda and vinegar to produce a natural cleaning solution. Pour this mixture down the drain to break down stubborn clogs and neutralize unpleasant odors, leaving behind a fresh scent.
  • Bleach Flush
For a more aggressive approach, consider flushing drains with bleach. This powerful disinfectant can kill bacteria and germs responsible for causing foul smells, effectively eliminating odor sources.

Calling a Professional

When battling persistent sewer odors, DIY efforts may fall short, necessitating a professional plumber's expertise. If home remedies prove ineffective, it's prudent to enlist a trained plumber. These professionals conduct meticulous inspections of the plumbing system in a house to pinpoint odor origins and propose tailored solutions.
Equipped with specialized tools and extensive knowledge, they adeptly address complex sewer line issues, ensuring a thorough resolution. Don't endure foul smells any longer—seek assistance from a professional plumber to restore your home's comfort and hygiene.

Preventive Measures

After eliminating sewer smells from your home, implementing preventive measures is crucial to stave off future occurrences. Consistent cleaning of drains and plumbing fixtures mitigates debris and bacteria buildup. Responsible waste disposal, such as refraining from flushing non-biodegradable items, preserves a healthy plumbing system.
Additionally, scheduling routine inspections and maintenance with a professional plumber acts as a proactive measure, detecting and addressing possible issues before they evolve into significant problems. By adopting these preventive strategies, you safeguard your home against unpleasant odors and costly repairs, ensuring a smoothly functioning plumbing system for the long term.

Who Should I Call for Sewer Repair and Replacement?

Ready to say goodbye to that pesky sewer smell in your home for good? Look no further! Call Home Alliance today for top-notch sewer repair and maintenance services. Our certified and licensed plumbers boast years of experience in providing exceptional plumbing services in Los Angeles, CA.
Don't let sewer odors ruin your comfort – trust our experts to restore freshness to your living space. Contact us now and breathe easy again!


In conclusion, combating sewer smells in your home demands both DIY efforts and professional intervention. By identifying the source and understanding common causes, you can effectively address the issue. DIY solutions like hot water flushes and baking soda treatments offer temporary relief, but relying on the trusted plumbing services in Los Angeles, CA, is essential for lasting results. Preventive measures, including regular maintenance and responsible waste disposal, ensure a fresh and odor-free home environment in the long run.


  • How do I know if the sewer smell is coming from my drains or the sewer line?
If the smell is strongest near drains, it's likely a drainage issue. If it's pervasive throughout the house, it could indicate a problem with the sewer line.
  • Can sewer smell be harmful to my health?
Inhaling sewer gases can be harmful, as they may contain toxic substances like methane and hydrogen sulfide. It's essential to address it promptly to avoid health risks.
  • What should I do if I can't locate the source of the sewer smell?
If you're unable to identify the source of the odor on your own, it's best to contact a professional plumber for assistance.
  • Are there any long-term solutions for preventing sewer smell in the house?
Regular maintenance, including cleaning drains and scheduling professional inspections, can help prevent it from recurring.
  • Can DIY methods for eliminating sewer smell cause damage to my plumbing system?
While some DIY solutions are safe and effective, others may damage your plumbing system if used incorrectly. It's essential to follow instructions carefully and avoid harsh chemicals that could corrode pipes.