toilet overflow

A Helpful Guide to Understanding Why Your Toilet Overflows

A fully functioning toilet is crucial for any home because it’s a convenient and comfortable way to remove waste without feeling embarrassed. It’s also a hygienic way to dispose of human waste, minimising the risk of illness and infection. Unfortunately, accidents can happen and lead to an overflowing toilet. 

Besides being embarrassing, an overflowing toilet can also cause expensive water and drain pipe damage to your house. While calling your general plumbing company may be your first instinct, you must immediately identify the overflow’s cause and try to fix it. 

If you want to prevent expensive and embarrassing mistakes, this article will help you understand why your toilet overflows and how to stop it. We’ll also answer if you should call a general plumbing company. 

What Causes Your Toilet to Overflow?

When your toilet overflows, it’s likely because of a clogged drain. Blockages result in an immediate surge when you flush the toilet. You can detect a clog early by observing how fast the water refills the bowl after flushing. If your bathroom gets clogged often, watch it after each flush, listen for gurgling noises, and find a professional general plumbing company. 

What Are the Common Causes of Toilet Clogs?

Toilet clogs usually occur when you flush too much waste or non-flushable items, dispose of kitchen or pet waste, or leave your children unattended to flush random objects down the drain. This general plumbing issue can also happen because of weak flushing or older or malfunctioning toilets. Moreover, you should check if the clog is in the sewer line, not just the toilet line. 

3 Fast-Acting Steps to Stop an Overflowing Toilet

After understanding the causes of overflowing toilets and embarrassing toilet clogs, this section will enumerate three quick steps to address this issue. 

1. Switch off the Toilet Shutoff Valve

While it may be understandable to panic when you see water overflowing from your toilet onto the floor, you should cut off the water supply to stop it from filling your toilet and flooding your bathroom. 

Switch off the toilet’s water supply, locate a silver, oval-shaped knob from the wall behind it, and rotate it counterclockwise. 

2. Look for the Toilet Tank Flapper

Other homeowners sometimes can’t access or unstick the shutoff valve because they left it open for extended periods and rarely use it. You can try an alternative solution within the toilet tank when this happens. 

Remove the lid from the toilet’s top and locate the flapper, a rubber disc covering the hole at the bottom of the tank. Even if the flapper is slightly open, it can cause water to flow into the bowl continuously. Next, gently press the flapper with your finger until the water stops running. 

3. Find the Toilet Tank Float Ball

If you’ve tried the two previous steps and the water keeps overflowing, your last resort is to find the float inside the toilet tank. This component resembles a giant balloon connected to a rod, which signals when the tank is full. Raise the float ball as high as possible and use an object to hold it in place while you clean the floor and clear the drain. 

Should I Call My Plumber for This Issue?

If you can identify an issue with your toilet’s ball or tank flapper, you can usually fix it yourself by buying replacement components from a local hardware store. You can also try unclogging the drain pipe’s blockage using a plunger or drain snake. 

However, there could be other severe reasons for an overflowing toilet, which you should let a professional general plumbing company handle. 


An overflowing toilet can be frustrating and embarrassing for anyone. You can prevent this expensive mistake by immediately identifying the problem, trying the proper techniques, and calling a general plumbing company. 

If your home needs high-quality general plumbing in Truganina, let us help. Duggan Plumbing is a family-owned and operated business committed to serving our clients with quality services. Book us now, and let’s help you maintain a well-functioning home!

Similar Posts