Troubleshooting Basement Sewer Smell ( Easy & Fast)

Dealing with smelling basement

Looking for direction for troubleshooting basement sewer smell?

If the answer is yes – continue reading and you are one step closer to the solution.

Unpleasant odors in our basement, which come from sewage pipes or septic tanks can be a very frustrating thing.

Whenever we think we have finally got rid of them, they reappear.

We don’t even know how many times we have tried to get rid of these uninvited guests but they somehow find their way back.

You may have tried to solve the problem with agents such as acid, baking soda, vinegar, or lemons.

These things may solve the smell problem for a short period, but it’s not a permanent solution.

To successfully remedy the situation, it is important to identify the main cause of basement sewer smell and, accordingly, find appropriate preventative measures and apply them.

A set of measures for troubleshooting basement sewer smell


For a start, you should check the condition of the sewer pipes, especially the joints.

The most common cause of unpleasant odors is old sewage pipes and splashes on them.

If you have that problem, just follow our guide for fixing pvc pipe.

Sometimes, in case of poor sealing, odors can occur and their connection must then be recharged.

If that’s not a case, maybe it’s a hydraulic seal. You can check it by listening to the sounds of running water.

In the case of pushing and rustling, there is a problem that needs to be solved.

This is evidence of a lack of fluid in the water seal.

The odor can also occur due to the vacuum plug in the lift, which is too long or due to sharp rotations of the liner.

Insufficient ventilation in the sewage system is very often the cause of the problem.

In this case, you need to call a plumber who will carry out a set of measures to troubleshooting basement sewer smell.

Also, it is recommended that you take a closer look at the corrugated pipe or siphon, depending on what you have.

A shortened siphon barrier affects the water seal, making it too small, sometimes allowing fluid.

This can be easily resolved – the part has to be replaced with a new one.

If you had a corrugated tube and there was a bad odor of the drain, then the odor spread was due to the extension. The best solution is to replace it.

Sometimes, rarely-used floor drains can be the source of the sewer-stench.

These drains are planned with a lash to hold a modest quantity of water to seal the funnel so sewer gases don’t escape into the home.

Over time, that seal can open as the drain evaporates (buildup, and so forth.) from little use, discharging sewer gas into the cellar and smelling the spot up.

It can be easily solved by dumping around clean water down the drain to reseal the pipe.

If none of this is the case, and odors continue to spread throughout the basement, it is best to contact a plumber.

Guide for  troubleshooting basement sewer smell


Although this problem can be very unpleasant, especially if the household is sensitive to strong odors, the troubleshooting basement sewer smell can be very simple.

All you need is some patience and skill.

There are two ways to eliminate odors: home-made methods and markets’ odor eliminator chemicals.

  1. Market chemicals

There are plenty of chemicals on the market which are all similar in composition and efficiency, but it is preferable not to buy the cheapest one.

When using a chemical you need to wear rubber gloves and pay extra attention not to get the substance on exposed parts of the body and eyes.

When the process is completed, the pipes should be flushed. Also, don’t forget to air the basement.

  1. Home-made methods

How to get rid of musty smell in the basement without the chemicals? One of the simplest options is to pour a moderate amount of salt into the drain hole.

It has to be washed away after a while. There is also another way to remove the scent from the pipes in the basement.

Two tablespoons of soda per liter of boiling water should be added, mixed, and poured into a drainage hole.

The water should not be cooled. Also, odors can be removed with a soaked soda as well.

For a start, the soda needs to be poured into the drain, adding some vinegar after it.

The hole should be tightly closed. Half an hour later rinse the gap thoroughly.

Any of the above procedures are suitable not only for eliminating odor problems but also for prevention.

Therefore, they can be performed regularly, for example, once a week.

Sump pump issues


Have you heard about the sump pump?

Usually, sump pumps are installed in specially constructed sump pits with one simple purpose: to keep the basement from flooding and prevent water damage if the water accumulation occurs. (source)

This is a unique mechanic which can save our house and our lives too.

How does it work?

The main sump’s task is to pump the water that has been collecting in the pit over time to keep the basement dry and protected.

However, the sump pump can occasionally spread unpleasant odors which is a sign of a bigger issue.

The pit that holds the sump siphon will gather water until it arrives at specific tallness, and afterward, the buoy on the siphon will trigger it to turn itself on and siphon the water out of the pit.

In the event that the water builds up an abnormal smell this may be the issue:

  • Sometimes, all of the water doesn’t get out of the pit. After a while, the water not only will emit stale odors but will also create an ideal place for mold and mildew growth.
  • In dry periods, the residual water in the pump will evaporate leaving a strange odor.
  • At the bottom of the pump water is collected thus creating odor-causing bacteria.
  • Fortunately, they can be destroyed with a little bleach. Pour a little of it into the sink to temporarily solve the problem.


  • Sewage issues

Sewer system with water helps in removing human waste.

Today it is impossible to imagine life without sewage but its’ “special” smell can often occur in our homes.

In some cases, a problem with sewage pipes appears, resulting in a strong smell in your basement.

If you are noticing that, get professional help as soon as possible.

However, that same raw sewage sometimes can get inside your drinking water supply.

Often pump can be mechanically damaged resulting in problems in pumping water and, consequently, its accumulation of stinking water.

That’s why you can sense that strange smell  – an alarm for a plumber call to help you troubleshooting basement sewer smell.

  • Humidity basement level

An agreeable humidity basement level should keep up a level of 30 to 50 percent — although, those may vary depending on the weather.

Throughout the summer months, the air outside is more blazing and progressively humid.

That air can advance into your basement, expanding your moisture levels to around 60 percent.

Along these lines, mortgage holders must work to change those levels back to the perfect humidity level somewhere in the range of 30 and 50 percent or hazard shape, mold, and microscopic organisms will be developed.

In the winter, cold air from outside can make the moisture levels in your basement drop.

What’s more, if that cool air is advancing inside, it presumably impacts your warming bills, as well.

Throughout the winter months, you’ll need to keep your in-home humidity levels around 25 – 40 percent when open-air temps extend from 20° F to 0° F, with the lower rates saved for the colder temps.

Low moistness levels can affect your wellbeing, causing things like nosebleeds, dry skin, and making your body increasingly helpless against basic winter-time disorders.

  • Shouldn’t something be said about the water in the basement?

It’s well known that objects (basements, basements, garages) are buried in the ground and are waterproofed on the outside during the construction period.

Horizontal and vertical waterproof is made with the help of waterproofing materials.

If poor-quality waterproofing materials are used or they are installed improperly, a leakage occurs – water enters the basement from floors or walls.

To prevent this – it’s important to use high-quality materials and skilled hands.

Don’t give up and

Odor problems can be challenging and tiring!

There are many reasons for odors’ appearance in your basement, but taking preventative measures on time can help you avoid the most problem.

Take care of the sewer system and constantly clean the pipes and siphon, do not throw the remaining food and trash in the toilet, put on the sink which protects the network system.

Musty odors in basements will quickly become a much larger problem if you don’t pay attention to them.

The best option is to call a plumber – a specialist will assist in troubleshooting basement sewer smell and other issues, saving you time and energy. Good luck!