There are a few different reasons why toilets might bubble, and it’s usually nothing to worry about. In most cases, the bubbles are caused by a build-up of air in the drain line.

When water flows into the toilet bowl, it displaces the air in the drain line, causing bubbles.
Another possible cause of bubbling toilets is a failing porcelain flange. This is the ring that seals the toilet to the floor and prevents sewer gases from escaping.
If the flange is loose or damaged, it can allow air to escape, causing the toilet to bubble.
In either case, the solution is typically to simply tighten the bolts that hold the flange in place.
If this doesn’t solve the problem, you may need to replace the flange.
What causes toilets to bubble?
When you flush the toilet, water rushes in to fill the bowl and then goes down the drain. But sometimes, instead of draining right away, the water starts bubbling up.
What’s causing this annoying problem? The bubbles are actually caused by a build-up of methane gas. Methane is produced when sewage decomposes, and it can become trapped in the sewer lines.
When enough methane accumulates, it can cause water to bubble up into the toilet bowl.
If you find that your toilet is regularly bubbling up, you should contact a plumber to have the problem addressed.
Taking care of the issue will not only improve your bathroom experience, but it could also help prevent a potentially disastrous explosion.
How to fix a bubbling toilet?
If your toilet is bubbling, it could be a sign that the water level in your bowl is too low.
To fix this, you’ll need to adjust the float arm. The float arm is usually located on the back of the toilet tank.
Once you’ve located it, simply turn it clockwise to raise the water level. If this doesn’t solve the problem, you may need to adjust the height of the fill valve. The fill valve controls the flow of water into the tank. It’s usually located near the bottom of the tank.
To adjust it, simply turn it clockwise to raise the height of the valve.
With a little trial and error, you should be able to find the perfect setting for your toilet.
The consequences of a bubbling toilet
The consequences of a bubbling toilet can be serious. If the toilet is not vented properly, the water in the bowl can become trapped and start to boil.
This can cause the bowl to crack, allowing sewage to leak into the home.
In addition, if the water in the bowl is not flushed regularly, it can become stagnant and start to emit an unpleasant odor.
The best way to avoid these problems is to vent the toilet properly and flush it regularly.
Prevention tips for avoiding a bubbling toilet
Prevention is always better than cure and this is especially true when it comes to plumbing.
A simple prevention tip for avoiding a bubbling toilet is to pour a cup of dishwashing liquid into the bowl and let it sit for 30 minutes.
This will break up the grease and grime that has built up over time, making it easier to flush away.
You can also add a half cup of baking soda to the bowl to help absorb any bad odors.
Finally, always make sure to brush the bowl clean after each use.
By following these simple tips, you can keep your toilet clean and free of any embarrassing bubbles.
How to clean and disinfect a bubbling toilet
To clean and disinfect your toilet, you’ll need to use a toilet brush and a disinfectant cleaner.
First, remove any solid waste from the toilet bowl with a toilet brush.
Then, add a generous amount of cleaner to the bowl and scrub thoroughly, making sure to reach all the nooks and crannies.
Once you’re done scrubbing, flush the toilet to rinse away the cleaner and any remaining bacteria.
For best results, repeat this process once a week. With regular cleaning, your toilet will stay clean and bacteria-free.
Conclusion
In conclusion, toilets bubble because of a build-up of air in the drain line.
This gas is usually methane produced when sewage decomposes, and it can become trapped in the sewer lines.
When enough methane accumulates, it can cause water to bubble up into the toilet bowl.
If you find that your toilet is regularly bubbling up, you should contact a plumber to have the problem addressed.
I hope this helps. Thank you for reading.