Everyone knows that the bathroom is not the place with the most pleasant scent, but there is a limit to what you can expect. When the bath begins to smell like a septic tank or city sewer, it’s time to find out why. It is not uncommon to have a smell of septic tank or sewage in the bathroom of your house. Some simple observations will help you discover the source of the smell, and if you can repair it.
A trap is a plumbing fixture located under the lavatory and at the bottom of most of the drains, including your shower, toilets and more. The function of these traps is to have enough water in the tube to form a seal, so that the malodorous gases or septic tank system drains do not leak into your home. If you notice septic odor, it is likely that a trap is dry and has allowed the gas to leak. The water may have evaporated traps if the drain is in a place where almost not used, as the shower or sink the guest room. All you need to do is to pour water slowly into the drain and fill the trap to stop odors escaping from the line.
Clogged roof tubes
It might be understandable to assume that those pipes coming out of your roof vent pipes are left out gaseous odor of the septic tank, but they are not. Indeed are inlet tubes, when the toilet or otherwise shallow water drainage pipes empty, carry air with them. This air must be replaced. Ceiling tubes allow air to enter from outside to replace it when the air goes down the tubes. Without these tubes, the water reservoir would trap to replace the air, and it would make the smell entering the home.
A wax seal serves to ensure that no water or gas main drain pipe to the floor of the bathroom when the toilet is flushed. Sometimes this seal is damaged or worn. This can cause small or large leaks around the base of the toilet. Sometimes the damage can be small enough that all that happens is the gas smell from below. If your toilet is not about a good seal, this could be the cause of your problem.
In places where roof outlets are not used, plumbers install an intake valve or mechanical ventilation to prevent siphoning of traps. These valves serve the same purpose as the roof jacks. If the valve fails, the trap may dry and remove the seal on the drain, allowing odors from entering the house. These valves are easily replaced and simply placed threading them as a focus. The valves are located near the traps under the sink or in a compartment in the wall above.