4 reasons why there’s sound coming from your toilet
If you’ve been hearing strange banging or flushing noises from your bathroom in the dead of night, or perhaps hissing and gurgling sounds during the day when no one is using the toilet, you might be wondering what’s going on. No need to worry—it’s probably not a ghostly visit. These unsettling sounds often point to common toilet issues that aren’t immediately visible but can lead to bigger problems if left unchecked. Here are four potential culprits behind those mysterious noises.
Are you hearing hissing from your toilet’s water tank?
Hissing can be directly heard after flushing the toilet, or even when the toilet is left alone for a period of time. The flapper valve is likely to blame. This small but crucial part in your toilet tank controls the flow of water into the bowl. When it wears out or doesn’t seal properly, water leaks through, causing the tank to constantly refill—and creating that telltale hiss. The fix is simple: replace the flapper and enjoy a quiet, efficient toilet once again!
2. Are you hearing gurgling/bubbling after you flush?
If your toilet gurgles or bubbles after flushing, it’s a sign of trouble. The most common cause is a clog in the pipes, which traps air and pushes it back into the bowl. It could also be a blocked vent pipe on your roof, which prevents proper airflow in the plumbing system, or even an issue with your municipal sewer line. Start by using a plunger for 10–15 strong plunges to clear any clogs. If the noise persists, it may be time to inspect the vent or call a plumber.
3. Is your toilet flushing on its own?
Hearing a toilet flushing on its own is known as ghost flushing. This could be a sign that your toilet could be leaking internally or externally. The pipe that refills water into the water tank could be overflowing, or pouring water into the bowl. This will cause the toilet to flush on its own. Make sure to look out for cracks or loose pipes, as they also can be causing this issue.
4. Are you hearing banging/hammering from your toilet?
Is your toilet causing loud banging or hammering noises after flushing? That’s "water hammer," caused by a sudden stop or redirection of water flow, creating a shockwave in your pipes. Common culprits include waterlogged air chambers (meant to absorb shock), loose pipes, or high water pressure. These issues can cause vibrations and loud banging as pipes shift. Simple fixes like draining the system or securing pipes can often resolve the problem!
Are the problems still present?
Noises from your toilet can be alarming, especially if they start suddenly and you don’t know the cause. If our tips above don’t fix your plumbing problem, then it is best to call a professional plumber in Whitby or in your local area with the right expertise and tools to ensure your home returns to a state of calm.