Where does the smell of sewage in the toilet come from and

One of the unpleasant features of some toilets, bathrooms and showers is the constant presence of sewage odor in the room. Despite the seemingly normal operation of the sewage system and the observance of all sanitary and hygienic standards, many residents periodically wonder why they stink of sewage in the toilet and how to get rid of this smell?

In some cases, even after a long airing, one has only to close the door to the room, as it appears again each time.

Fighting odor

In order to help the reader get an answer to this question, this article will discuss the main causes of an unpleasant odor in wet indoor areas with an installed sewage system.

Also here will be presented a detailed instruction that describes what needs to be done in order to eliminate this unpleasant phenomenon.

Incorrect installation of sewage system

As you know, in order to eliminate any deficiency, first of all, it is necessary to find out the reason for its occurrence. The reasons for this phenomenon may be several, and one of them is the improper installation and connection of some elements of the sewer system. Such a malfunction can also be indicated by the fact that the toilet sews unpleasantly from the very beginning, after the repair or moving to a new dwelling.

First of all, it is necessary to carefully examine all the details of the in-house sewer network.

1. To begin the inspection, it is necessary to connect the in-house collector with the common vertical riser of an apartment building. It must be completely sealed, without cracks, chips, traces of smudges and visible repair.
2. Further, by the same principle, the collector should be inspected along its entire length, and also pay attention to the connection of the drain pipes from all plumbing fixtures to it.
3. In most cases, the toilet bowl is connected to the drainage manifold using plastic corrugations or an elastic rubber cuff. Over time, these parts may appear cracks or tears, so during repair it is better to replace them immediately.
4. Drainage of domestic sewage in the sewer network is carried out by gravity, so you need to check that the angles of inclination of all pipes comply with the requirements of SNiP 2.04.01-85 * "Internal water supply and sewerage of buildings."
5. In old houses with cast-iron sewage pipes, penetrating corrosion of the metal can cause an unpleasant smell. In this case, it is recommended to immediately replace the entire riser throughout the entrance, moreover, if you distribute the costs for all tenants, the cost of such repairs will not be very high.

   Tip! For washing toilet bowls and other sanitary appliances, it is recommended to use special detergents and cleaners that contain deodorizing, as well as antimicrobial and disinfecting additives.

Malfunctions in the siphon

Another answer to the question of why sewage in the toilet smells can be the improper functioning of a hydraulic seal, which underlies the work of the familiar siphon.

Its intended purpose is precisely to create a water block in the system, which prevents the penetration of fetid fetid gases from the sewer into the room.

1. In the case of a prolonged lack of water or inactivity of the sanitary appliance, water from the water trap evaporates and allows direct access to the fetid gases in the room.
2. If the siphon is installed incorrectly, the water level cannot completely block the inner lumen of the pipe; therefore, a gap appears for the access of fetid air.

1. In case of using a siphon with a corrugated pipe, it may eventually stretch or sag, as a result of which it will cease to perform its function as a trap.
2. Food debris, hair, grease, and other organic debris that can settle on the bottom of the siphon can decompose and give off an unpleasant odor.
3. The drain nozzle of the washing machine must be connected to the system above the siphon, otherwise all fecal gases, bypassing the water trap, will penetrate into its drum through the drain hose and spread further throughout the room.
4. Reducing the internal lumen of sewage pipes and clogging the ventilating riser can cause a vacuum in the sewer system, which in turn leads to periodic suction of water and, as a result, breakdown of the water trap.

Tip! For the normal functioning of the bottle-type siphon, it is recommended to completely disassemble and clean it with your own hands using detergent, at least once a year.

Sewer pipe leaks

The breach of tightness of the free-flow sewage system begins, as a rule, from a small inconspicuous puddle under the bathtub or behind the toilet, which increases every day.

The water gradually evaporates, and the concentration of fetid slurry increases, while the tenants of the apartment cannot understand why the sewage system stinks in the toilet, if at first glance, the whole system works properly.

1. For this reason, in the event of an unpleasant smell, you must carefully check the tightness of all joints and connections. Even with the appearance of minor traces of sewer pipe leaks, take immediate steps to eliminate it.
2. When leaking at the joints, you can try to replace the rubber gasket, and in case of a rupture or crack in the body of the pipe or flange, you must completely replace the entire element.
3. Impairment of the sealing of cast-iron pipes can be restored with the help of flax soak, soaking it in a liquid solution of cement paste, and slanted into the damaged socket.

   Tip! For emergency repair of the crack in the pipe body, you can install metal automotive clamps on it, pre-putting a rubber gasket on the damaged place.

Disturbances in the operation of the ventilation system

The appearance of unpleasant odor, as well as stale or stale air may be due to insufficient or ineffective ventilation of the room. Therefore, when a question arises, what to do - if the toilet smells of sewage, among other measures, it is also necessary to pay attention to the operation of the ventilation system.

The absence of normal ventilation, in addition to an unpleasant odor, can have an adverse effect on the health of residents, as well as lead to premature deterioration of finishing materials and the occurrence of foci of mold fungus.

1. To check the natural draft of the ventilation risers of a multistory building, it is necessary to attach a flat sheet of paper to the ventilation grille.. If the thrust force is sufficient to freely hold the sheet pressed to the grid, it is considered that such ventilation is working properly.
2. As a forced exhaust ventilation, a built-in household fan can be installed inside the ventilation duct, which is sold in any large hardware store.

Conclusion

After reading this article, we can conclude that with the right approach, it is easy to find out where the unpleasant smell comes from in the room, and knowing the reason, you can always find a way to eliminate this unpleasant phenomenon (find out here how the sewage calculation is performed).

For more information on this issue, you can watch the video in this article or read other materials on this topic on our website.