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Why Is My Toilet Bubbling?


Toilet bubbles are a common occurrence that most of us have encountered at some point in our lives. While they may seem harmless, they can indicate underlying plumbing issues. Understanding why a toilet at your Oakville property is bubbling will help you know when it’s time to seek professional attention. 

What Do Toilet Bubbles Happen?

Toilet bubbles are a result of the interaction between air and water within the plumbing system. When you flush a toilet, a rush of water enters the bowl and travels down the drainpipe. This sudden influx of water can displace air that is trapped in the plumbing pipes, causing bubbles to form. These bubbles rise to the surface, creating the familiar gurgling or bubbling sound.

Common Causes of Toilet Bubbles

  •  High Water Pressure: Excessively high water pressure can force air into the plumbing system, leading to bubbles. This can be caused by issues with the water supply or a faulty pressure-reducing valve. Knowing how to diagnose water pressure in your home will help determine when it is time to contact a professional.
  •  Ventilation Issues: In a properly functioning plumbing system, air vents are designed to allow air to enter the pipes, preventing a vacuum from forming. When these vents become clogged with debris or blocked for any reason, it can disrupt the airflow, leading to toilet bubbles.
  • Partial Blockages: Partial blockages in the drainpipe can restrict the flow of water, creating turbulence that can result in bubbles. These blockages are often caused by debris buildup, such as hair, toilet paper, or mineral deposits.
  • Septic Tank Problems: If you have a septic tank, bubbles in your toilet can be a sign of septic system issues. A failing septic tank can release gasses into the plumbing, leading to bubbling and unpleasant odours.

When to Seek Professional Help

While some toilet bubbles are harmless and may be resolved by simple fixes like clearing a clogged vent or drain pipe, there are situations where professional assistance is necessary.

Some situations include:

  • Slow Draining: If your toilet is slow to flush or drain, this may indicate a more serious blockage that needs professional clearing. Read how to fix a slow-draining toilet to assess whether it is something you can fix yourself.
  • Persistent Bubbles: If you notice persistent toilet bubbles, especially in multiple fixtures throughout your home, it could indicate a more significant problem within your plumbing system.
  • Foul Odours: If foul odours accompany the bubbling, it may suggest a sewer gas leak, which requires immediate attention to prevent health hazards.

Contact A. McKenna Plumbing Today

While toilet bubbling may not always be a cause for concern, persistent or accompanied by other symptoms, they should not be ignored. Contact us today to diagnose and resolve any underlying problems at your Oakville property.