A leaking toilet is not just an inconvenience but also a waste of water and money. At D&S Plumbing Group, we understand how vital a well-functioning toilet is to your daily life. And, as plumbing experts, we certainly know how to fix a leaking toilet.
Whether you’re a homeowner, a property manager, a business owner or someone involved in commercial construction who wants to know how to fix a leaking toilet, this guide will walk you through the process of identifying and fixing common toilet leaks, with special attention paid to fixing a leaking toilet cistern, a common problem that we get asked about by our clients.
Understanding toilet leaks
Before diving into repairs, it’s crucial to understand the common causes of toilet leaks. Leaks can occur from the tank, the base, or in the cistern. Sometimes, it’s a simple issue like a loose connection, while other times, it might require replacing parts
At D&S Plumbing Group, we encounter various kinds of toilet leaks, each requiring a specific approach. Some toilet leaks are fairly simple to fix and at times can be fixed yourself. At other times, you’ll need the expertise of a plumbing specialist like yours truly.
Here’s a breakdown of the common types and how to identify them:
Toilet tank leaks
Definition: These leaks occur in the toilet tank and are often due to faulty internal mechanisms.
Symptoms: You might hear water continuously running or notice that the tank doesn’t fill up properly. A common test is to add food colouring to the tank water. If the colour seeps into the toilet bowl without flushing, there’s a leak in the tank.
Toilet base leaks
Definition: Base leaks happen at the base of the toilet, where the toilet meets the floor.
Symptoms: These leaks are usually visible as water pooling around the base of the toilet. Another indicator is if the toilet feels unstable or rocks when you sit on it, suggesting a broken seal or wax ring.
Toilet cistern leaks
Definition: Toilet cistern leaks occur in the cistern part of the toilet, which holds and regulates the water before it flushes.
Symptoms: If you notice water dripping from the sides of the cistern or water continuously flowing into the bowl, it’s likely a cistern leak. Also, an unusually high water level in the cistern can be a sign.
Toilet supply line leaks
Definition: These leaks are found in the water supply line that feeds water into the toilet.
Symptoms: Visible dripping or moisture along the line, or dampness in the area where the supply line connects to the toilet, indicates a supply line leak.
Toilet flapper valve leaks
Definition: Flapper valve leaks occur when the flapper inside the tank, responsible for controlling water flow into the bowl, doesn’t seal correctly.
Symptoms: The toilet might run intermittently, known as “ghost flushing,” or you might need to jiggle the handle to stop the toilet from running.
Toilet bowl leaks
Definition: These leaks occur in the toilet bowl itself and can be due to a variety of reasons.
Symptoms: Unexplained water on the floor around the bowl, a noticeable drop in water level in the bowl over a short period, or cracks in the bowl. Sometimes, the cause is a faulty or misaligned flapper, leading to a slow leak into the bowl, noticeable through a periodic refilling sound.
Crack leaks in toilets
Definition: These are leaks due to cracks in the toilet itself, either in the bowl or the tank.
Symptoms: Water may leak from the crack, especially when the toilet is flushed. Cracks can be hairline and hard to see, so thorough inspection is necessary.
Toilet inlet valve leaks
Definition: These leaks occur at the inlet valve, where water enters the toilet tank from the supply line.
Symptoms: Sounds of hissing or constant running water even when the toilet is not in use. A faulty inlet valve can cause the tank to overfill, leading to water spilling into the overflow tube and into the bowl. Another sign is fluctuating water levels in the toilet tank.
Fixing a leaking toilet cistern: a step-by-step guide
If you’ve figured out your problem is a leaking toilet cistern and you need a guide on fixing it, here’s what you need to do:
Diagnose the leak
Check for visible signs of leakage around the cistern. Listen for running water when the toilet is not in use, which could indicate a leak.- Turn off the water supply
Always start by turning off the water to avoid a bigger mess.
- Inspect the components
Look at the flush valve, float mechanism, and other internal components. Check for wear, corrosion, or misalignment.
- Replace faulty parts
If you find a worn-out flush valve or a broken float, replace these parts. This is often where leaks originate.
How to replace a leaky toilet cistern:
Choosing the right cistern
Make sure you have the correct replacement that fits your toilet model.
Removing the old cistern
Carefully disconnect and remove the old cistern. Take this opportunity to clean the area before installing the new one.
Installing the new cistern
Follow the manufacturer’s instructions to install the new cistern. Ensure all seals are tight to prevent future leaks.
Preventative Maintenance Tips:
Regular checks
Inspect your toilet periodically for signs of wear.
Listen for unusual sounds
Running water or strange noises from your toilet can indicate a problem.
Test for leaks
Place a few drops of food colouring in the tank. If the colour appears in the bowl without flushing, (or if it appears outside the toilet bowl), there’s a leak.
How do you know when to call a plumber?
At D&S Plumbing Group, we believe in empowering our clients with the knowledge to tackle simple plumbing issues while also providing our expert plumbing services and professional intervention when necessary. Here’s a quick list of the leaking toilet problems you might be able to fix without us, and which you’ll need to call a specialist on.
A quick note before though; when in doubt, call a plumber. Whenever something seems like it could be dangerous, could cause damage, or should be left to an expert, it’s definitely better to get someone experienced on the job.
Here are a few of the types of toilet water leaks you may be able to fix on your own.
Simple flapper valve issues
The flapper valve controls the flow of water from the tank to the bowl. Over time, it can wear out or become misaligned. Replacing or realigning the flapper is a relatively straightforward process that requires minimal tools. This should fix a leaking toilet if the flapper valve is the issue and it’s a simple flapper valve issue (not a complex one).
Adjusting the float
The float regulates the water level in the tank. Incorrect adjustment can cause the tank to overfill or underfill. Adjusting the float is usually a simple task that involves bending a rod or turning a screw, depending on your toilet’s design.
Tightening loose connections
Description: Sometimes, leaks are just due to loose connections, like where the supply line attaches to the tank. Tightening these connections with a wrench can often resolve the leak. Just make sure you turn it the right way; you really don’t want to loosen it.
If your toilet has water leaking because of any of the above issues, you may be able to fix the leak by yourself. However, if it’s any of the below problems, you’ll need the help of a professional plumber like D&S Plumbing Group. As a fully licensed plumber with experience diagnosing and fixing a huge range of issues, we’ve got all of your plumbing needs covered. You can count on our experienced team to get everything working properly in next to no time.
Need help diagnosing if it's an easy fix? We can help
If you’re unsure whether you can fix a leaking toilet problem with a simple step like the above issues, or if your leaking toilet is a bigger or more complex problem that needs a plumber, give us a call.
Our experts will be able to ask you questions that can determine how big the issue is, and how easy the fix is. We’ll be able to talk you through checking the basics, and if the issue is tricky to figure out or seems like a bigger problem (or a more urgent problem), we’ll send someone out to help quickly. Give us a call today to chat through your leaking toilet cistern or other toilet leak problems.
Leaking toilet issues that need a plumber's expertise
Base leaks
Leaks at the base of the toilet can indicate a broken seal or a more serious issue with the toilet’s installation. This repair often requires removing the toilet and replacing the wax seal or rubber seal, which can be complex and messy.
Internal mechanism failures
Problems with the inlet valve, syphon jet, or other internal components can be tricky to diagnose and repair. A plumber can accurately diagnose the issue and has the tools and expertise to fix it properly.
Cracks in the toilet cistern, bowl or tank
Cracks in the toilet bowl or tank can lead to significant leaks. Repairing or replacing a cracked toilet should be handled by a professional to ensure it’s done safely and effectively.
Persistent or recurring leaks
Description: If a leak persists after you’ve tried fixing it, or if it keeps coming back, there might be a deeper issue with the water line, drainage system, sewer pipe, running cistern, outlet valve, float valve, fill valve, water valve, toilet auger, flush mechanism, seal, overall plumbing, drain, pipe, or another crucial part of the toilet. Bigger issues with any of these parts or recurring leaks and issues will need professional expertise.
Persistent leaks require a plumber’s insight to diagnose underlying problems that aren’t easy to find.
Your local plumbing specialists
Dealing with a leaking toilet can be a hassle, but with the right guidance and support, it can be a manageable task.
At D&S Plumbing Group, we’re committed to providing you with the best plumbing solutions in North and South Brisbane, QLD. Whether it’s a simple repair or a more complex issue like replacing a toilet cistern, our team is ready to deliver top-notch service with a friendly, professional approach. Give us a call today.
Why does D&S Plumbing Group stand out for plumbing?
Expertise in residential and commercial projects
Our extensive experience in managing projects from start to finish gives us a unique edge in troubleshooting and solving plumbing issues.
Dedicated to quality and efficiency
We believe in providing solutions that are not only effective, but also efficient and durable. The work we do is always of a high standard, and our quality workmanship will stand the test of time.
Customer-centric approach
Our services are tailored to meet the specific needs of our clients. Whether you’re a property manager, body corporate, residential builder, business owner, homeowner or home resident with a leaking toilet or another plumbing issue, we’ll prioritise your needs.
