Introduction
At first glance, your toilets might seem to be working perfectly.
They flush. They refill. There are no obvious leaks or maintenance issues.
But what if they’re quietly wasting water every single day?
Leaking toilets, often called “leaky loos” are one of the most common and costly sources of hidden water waste in commercial buildings. And because the signs are subtle, they’re easy to miss.
Here are five simple ways to spot them.
1. A constant trickle in the pan
One of the clearest indicators of a leak is a continuous flow of water at the back of the toilet pan.
It might look like a slight ripple or a faint stream but if water is moving when the toilet hasn’t been flushed, it’s likely leaking from the cistern.
This kind of silent leak can waste hundreds of litres a day without being noticed.
2. The tissue test fails
A quick and effective way to check for a leak is the tissue test.
Place a piece of dry toilet paper at the back of the pan and leave it for a minute or two.
If it becomes wet without flushing, water is escaping from the cistern, clear evidence of a leak.
This simple method is widely recommended by organisations like Waterwise as an easy first step in identifying water waste.
3. You can hear water when the toilet isn’t in use
In a quiet washroom, listen carefully.
A leaking toilet may produce a faint:
These noises are often overlooked in busy environments, but they can indicate that water is constantly flowing through the system.
4. Frequent or “phantom” refilling
Does the toilet seem to refill itself when no one has used it?
This is often caused by water slowly leaking out of the cistern, triggering the refill mechanism repeatedly.
It’s a common issue with ageing or worn internal components and a clear sign that water is being wasted.
4. Rising water bills with no clear explanation
If your water usage is increasing but your building occupancy or usage hasn’t changed, hidden leaks could be the cause.
Toilets are used frequently, so even a small, continuous leak can have a significant impact over time, especially across multiple washrooms.
Why these signs matter
A single leaking toilet can waste:
Multiply that across your site, and the cost quickly adds up, not just financially, but environmentally too.
What causes a leaky loo?
In most cases, the issue comes down to wear and tear. Traditional flushing systems rely on internal components like valves and seals, which degrade over time. As they wear down, they allow water to pass through continuously, creating a leak that often goes unnoticed.
How to stop the problem for good
While leaks can sometimes be repaired, many organisations are choosing to upgrade to more reliable, modern systems.
Solutions like Easyflush Direct remove the need for a cistern altogether, eliminating the components most likely to fail.
With direct mains-fed flushing and sensor activation, they:
Not sure if you have a leaky loo?
The signs can be subtle but the impact isn’t. That’s why many facilities managers are turning to professional assessments to uncover hidden water waste.
Take control of your water usage
If you want to:
Book a water survey with Cistermiser and find out exactly where you could be saving.
