Common blockages tend to be caused by tree roots grease and items that shouldn t have been flushed down the drain.
Why does my bathroom sink smell like sewer gas.
Sewer odors originating from your septic tank may be due to a clogged drain that caused the pipes to dry out a faulty pump that no longer replaces old wastewater with new a blocked vent system or frost or ice buildup on the outdoor plumbing vent.
It occurs most often in guest bathrooms that don t receive much use.
One common cause of sewer gas leaks comes from damage to your sewer or septic pipes.
It s the section of piping underneath your sink that is shaped like a u.
The water in the drains traps evaporates and isn t replaced giving sewer gas free entrance into your home.
In most cases if you smell sewer like gas in your bathroom sink there is an odor escaping through your drainage system.
So what is the p trap and why do you need it.
In some cases inhaling high levels of sewer gas can lead to health problems.
Before you contemplate about calling a plumber you can always try to use cost effective measures.
It s smart of you to address the offensive odor right away though.
Sometimes it happens that the sewer smell in the bathroom comes from the sink.
A rancid odor coming from your sink drain may just be coming from debris in the p trap but if it smells like a sewer it probably means venting problems in your drain system.
When the vents are blocked flushing a toilet can create sufficient vacuum to suck water out of the trap and allow sewer gases into your home.
Like many others your sink probably has a hole at the top that allows fast drainage when the sink is full of water.
This is not only irritating but it can also be a health hazard.
A sewer gas smell in your bathroom drains is more than just unpleasant.
The first reason you could be noticing a sewer gas smell in bathroom has to do with the water in your bathroom s p trap evaporating which leaves the room susceptible to odors.
Sometimes the plumbing problem causing the sewer gas smell is caused by your septic tank.
Prolonged exposure to sewer gases can cause nausea.
It can also be a health and safety hazard.
As discussed above the issue could be brought about by a dry p trap or a clog.
The possible reason is clogging of the pipe that leads to dry p trap.
Besides the obvious unpleasant smell the methane in sewer gas can actually be flammable in large quantities and breathing it in can be hazardous to your health.
If you are smelling sewer gas in your kitchen something has gone awry with the system.