A running toilet might seem like a minor nuisance, but it’s one of the most common plumbing problems Sydney homeowners face, and one of the most expensive if ignored. Even a slow trickle can waste hundreds of litres of water every day, driving up your water bill and putting unnecessary strain on your plumbing system.
At Pro Plumber, we’ve helped countless Sydney households stop that endless flushing sound and restore efficiency. Here’s what’s really happening and how to fix it.
Why Your Toilet Keeps Running
When a toilet continues to run after flushing, it’s usually caused by one of these issues:
- Faulty flapper valve: The rubber seal inside the cistern doesn’t close properly, allowing water to leak continuously into the bowl.
- Float problems: If the float is set too high, the cistern overfills and the overflow pipe drains excess water.
- Worn or misaligned parts: Fill valves, seals, and washers can degrade over time, especially in older toilets.
- Water pressure fluctuations: Inconsistent pressure can cause the fill valve to stay open longer than necessary.
Understanding these components is the first step to diagnosing your running toilet and knowing whether it’s a quick DIY fix or a job for a professional.
The Hidden Costs of a Running Toilet
Ignoring a running toilet might not seem urgent until the next water bill arrives. A single faulty toilet can waste up to 700 litres a day. Over a month, that’s enough to fill a small swimming pool.
In addition to higher utility costs, the constant water flow can also lead to:
- Dampness and mould in your bathroom walls or flooring
- Increased wear on internal plumbing components
- Noise and disruption from the constant refilling
If you suspect a hidden leak elsewhere, it’s worth checking out our leak detection services for a professional assessment.
How to Fix a Running Toilet
You can perform a few quick checks before calling in the pros:
- Check the flapper: Open the cistern lid and inspect the rubber seal. If it’s warped or doesn’t seal completely, replace it.
- Adjust the float: Lowering the float slightly can stop overfilling.
- Inspect the fill valve: If it looks corroded or constantly runs, it may need replacement.
- Turn off the water supply: If the toilet won’t stop running, shut off the water supply tap (usually located near the base of the cistern) to prevent further wastage.
If these simple fixes don’t work, it’s time to call a licensed plumber. The problem could be deeper within the toilet mechanism or connected to your property’s main water line.
When to Replace Instead of Repair
Sometimes, repairing an older toilet isn’t cost-effective. If your system is over 10 years old, upgrading to a modern dual-flush toilet can save significant water and money long-term.
Our team can help you decide whether you need a toilet repair or replacement based on your model, water efficiency rating, and household usage.
Final Thoughts
A running toilet is more than an annoyance; it’s a sign your plumbing needs attention. By fixing it early, you’ll save water, lower bills, and protect your home from hidden leaks.
For expert diagnosis and repair, get in touch with Pro Plumber today.
👉 Contact our Sydney team to book a toilet inspection or repair service.
