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Why Does Your Bathroom Smell Like Sewage 

Is there a foul odour or sewer smell coming from your bathroom? You may have a serious plumbing problem. Find out what causes nasty sewer smells in your bathroom by reading our guide.

Steven Bahbah

Steven Bahbah

Imagine having relatives at your place, and suddenly, you smell sewage gases or a foul odour in the guest bathroom.

A smelly bathroom is one of Australia’s most common plumbing problems; however, there is nothing to worry about. In fact, several reasons can cause your bathroom to emit a sewer gas smell. For instance, the toilet bowl can be clogged by diapers and tissues, preventing waste from leaving the bathroom.

This waste build-up in your toilet bowl will eventually release a stubborn sewage smell that most guests detest. Besides this, faulty plumbing can cause your bathroom and shower drain to emit a sewage-like odour, especially when bathroom drains are installed incorrectly.

Nevertheless, you can avoid embarrassment by identifying the causes and taking preventative measures against them.

Keeping this in mind, we have put together this guide to help you identify the sources of the problem and how to fix them.

Cause For Sewer Smell In Bathroom

When your house smells like a sewer, it clearly indicates that the plumbing system requires some repair or replacement. For instance, if you have the pipes installed in the backyard, there is a high chance of tree roots penetrating the pipes. This can prevent waste water from draining efficiently.

Besides this, there can be a problem with the p-trap installed in the plumbing system. A p-trap is a u-shaped pipe designed to hold in smelly sewer gases while allowing fresh air to leave the drain. For it to work efficiently, the p-trap collects a small quantity of water which acts as a barrier to the sewage odour.

Nevertheless, a dry p-trap during the summer can cause sewage smells to pass through the pipes. Similarly, the u-shaped pipe can dry up if you don’t use the toilet too often. However, this can be avoided if you run water from time to time through the pipes.

Another possible reason for a smelly bathroom is the lack of vent pipes which prevent sewer gas smell from escaping the drain. A cut vent pipe can cause similar issues since the sewer gases easily escape the pipes and circulate through the house. Leaking gas can cause various health issues such as nausea, dizziness, headaches and many more.

What To Do If Your Bathroom Smells Like Sewage?

Roots Caught Pipe

Now that we have discussed the various causes of a smelly bathroom, we would like to share a few tips to prevent the sewage smell from appearing.

For starters, we highly recommend maintaining your plumbing system regularly since old pipes can easily leak and release harmful odours into the house.

Replacing old and damaged pipes will ensure your house doesn’t smell like a sewer. Apart from this, you must ensure that the main plumbing system is far away from tree roots. We recommend placing the plumbing system elsewhere if trees are growing in your yard.

If your house has more than one bathroom, we highly suggest using both bathrooms periodically since it helps keep the p-trap well hydrated. This will ensure that the spare bathroom doesn’t smell whenever you have guests over.

Additionally, if you encounter a clogged drain or a clogged plumbing vent, you can use a plunger or a drain snake to unclog the blockage. However, you must apply the right amount of pressure, or else the shower drain pipes might burst. You can also use air fresheners to keep the bathroom smelling fresh after you have just used it.

Lastly, vinegar and baking soda solution are one of the best remedies for removing clogs and debris from toilet drains.

Frequently Asked Questions

Putting Bathroom Fan Ceiling

1. How Can You Get Rid Of Sewer Smell Without Sending Too Much Money?

When it comes to home remedies, one of the most effective ways to remove sewer gas from all the drains is by using water and vinegar. You can mix boiling water or hot water and vinegar to form a cleaning solution for the drains.

Just pour the solution down the bathroom sink and wait 15 minutes for the solution to clear the drain. Once the drain is cleared, it will automatically eliminate all the sewage odours, and sewer smells.

2. Can The Shower Water Start To Smell In Your Bathroom?

Yes! Shower water can start giving a foul smell if it accumulates within the septic system due to a clogged drain. Additionally, when food particles and other forms of waste get stuck within the pipelines, it causes bacteria to spread.

This bacteria will eventually accumulate in the sewer system and start releasing a bad smell like sulphur, similar to a rotten egg smell.

Keep Your Bathroom Drain Smelling Fresh

With that, we have reached the end of our guide, and we hope you were able to learn from it. Before signing off, we would like to share a few pointers that can help you prevent this problem from occurring.

Firstly, you should always throw tissues and diapers in garbage disposal since they can clog the drains and prevent waste from leaving the bathroom. Secondly, if you notice any minor toilet leaks, you should immediately address them before they can cause serious damage to your property.

Installing a reliable vent pipe can prevent nasty smells from haunting your bathroom. Lastly, you should contact a professional plumber if the problem persists. They can conduct a sewer inspection and identify why your bathroom smells like sewer backup.

That said, it’s a wrap. See you next time!

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