A toilet leak can waste anywhere from a trickle to several gallons (or litres) per minute, with small silent leaks losing about 1/4 to 1 litre (1/4 to 1 quart) a minute, while a steady, unnoticed leak can waste 2 to 5 gallons (7.5 to 19 litres) or more per minute, adding up to thousands of litres or gallons monthly and significantly hiking your water bill.
Check for leaks
A dripping tap can waste up to 12,000 litres a year. If you see a tap dripping in your workplace, report it. A continuously leaking toilet can waste up to 96,000 litres a year.
The most common toilet leak is caused by a deteriorated flush valve (flapper) at the bottom of the toilet tank. If the flapper does not seat properly, water will leak into the toilet bowl. Often this leak will occur without being heard.
Australians typically have a dual-flush or single-flush cistern in their homes or offices, and GWM Water in Victoria estimates both types. A dual-flush toilet uses approximately 3 litres for a half-flush and 6 litres for a full flush, while a single-flush toilet uses between 9 and 11 litres per flush.
The most common cause for a high water bill is running water from your toilet. A continuously running toilet can waste up to 200 gallons a day or more depending on the volume flow down the drain. This can cause a terrible increase to a family's typical water use, so fix toilet leaks as soon as possible.
A 20-minute shower can use 180 to 380 litres of water, depending on your showerhead: a water-efficient model uses about 180 litres (9 L/min), while an older, standard head can use up to 380 litres (19 L/min) or more. To calculate yours, multiply your showerhead's flow rate (in litres per minute) by 20.
Plumbers can detect hidden water leaks using several different professional water leak detection methods, including thermal imaging cameras, acoustic tools, moisture sensors, pipe cameras, and pressure testing.
Chemical Sensitivity: Some non-wax gaskets can degrade when exposed to certain cleaning chemicals, potentially leading to leaks.
20,000 litres of water can last a single person roughly 2-3 months (55-100 days), while a family of four might use it in a few weeks to a month, depending heavily on daily usage, with averages ranging from 150-300 litres per person/day in Australia. For farms or heavy garden/livestock use, it could deplete much faster, possibly in weeks, but for basic backup, it's a solid supply.
Examine the floor around your toilet for any puddles, moisture, or dark spots, which may indicate water leaking from the base. If you notice dampness, water rings, or pooling on the floor, this could be a sign that the wax ring is not sealing properly.
Here in Australia, all that muck flows into our sewer systems, a network of pipes that run from your home to your local sewage treatment plant. Did You Know? Sewage is actually 99% water and just 1% solids, fats, and chemicals.
If your toilet runs at night, it's almost always a leak in the tank – usually an old flapper or a faulty fill valve. Most issues are cheap and easy to fix if you act quickly. But ignore them, and you'll be paying for it – literally. Hundreds of dollars and thousands of gallons wasted.
Property Damage
Leaking toilets can cause damage to floors, walls, and ceilings that are in the vicinity of the leaking toilet. Over time, this can lead to costly repairs and renovations.
A call during regular business hours for a plumber to visit is likely okay. Emergency response is warranted if your toilet is gushing water or the leakage is intense, no matter where it's coming from. When large volumes of water are released, flooding and water penetration into walls and flooring happen rapidly.
It is possible to have a silent leak (one that you don't see or hear) and lose up to 200 gallons per day. It could be caused by the flapper, which is the large rubber plug in the tank. The tank is the back of the toilet where the unused water for the bowl is stored.
The two most common causes of a toilet leak are the flapper or fill valve.
The typical cost for a professional water leak detection service in the UK ranges from £550 to £1,250. This price can vary depending on the complexity of the leak, the location (e.g., behind walls, underground), and the specific advanced equipment (like tracer gas or thermal imaging) required to locate it.
Instead of a strong, sudden burst that soaks through your clothes immediately, you might notice a gentle trickle or a few drops that slowly dampen your underwear or pad. This trickle is usually clear and watery, so it feels different from your regular, thicker vaginal discharge.
Plumbers use video pipe inspection equipment, listening discs, thermal imaging cameras, and soil probes to accurately detect leaks. These tools help them locate and fix leaks efficiently.
On average, approximately 70 percent of that water is used indoors, with the bathroom being the largest consumer (a toilet alone can use 27 percent!).
The average person has a shower duration of 7 minutes. Shower timer duration is 4 minutes; saving 3 minutes shower time or 45 litres (QLD Government 2008). The average Burnside household is made up of 2.36 people (Australian Bureau of Statistics 2006).
For most adults, Dr. Gordon Spratt recommends showering just once a day at most. For elderly adults, she says one shower every 2 to 3 days is sufficient, since skin tends to be drier and frequent bathing can exacerbate it.