Why Your Toilet Keeps Running
Usually three cistern faults make a toilet keeps running problem: the inlet valve, the flush valve seal, or the water level. The valve can fail to close, the seal can leak, and the level can sit high enough to spill through the overflow. The sound usually names the culprit.
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Licensed plumbers meet this fault constantly in Warner, because the local estates went up from the mid-1990s onward and their cisterns have flushed daily ever since. This guide covers the three causes, the colour test for a silent leak, and where Queensland law draws the line between your parts and ours.
Why the Cistern Never Stops Filling
Three faults keep a cistern filling: an inlet valve stuck open, a leaking flush valve seal, and a water level sitting above the overflow. Each one leaves its own signature.
A hiss after the refill
Each flush ends with the inlet valve topping the cistern up until the float reaches the set mark. A hiss or trickle that carries on past the refill points to that valve failing to close.
The cistern refilling itself
The outlet valve, most people call it the flush valve, holds the cistern's water between flushes. Once its seal wears, water slips into the pan, so the cistern refills on its own throughout the day with nobody near the button.
Water out of the overflow
The overflow spares your floor by carrying surplus water away. With the inlet valve held open or the float set above the mark, the level climbs until water runs out through the overflow pipe.
When the Cistern Will Not Fill
A cistern that will not fill usually comes down to the inlet valve, a float set below its mark, or a stop tap that never opened fully.
Each cause starves the refill differently: a worn valve fills weakly, a low float cuts the fill short, and a partly closed tap throttles the whole cistern.
One case flips the diagnosis. Water arriving at full flow while the level never rises means the outlet seal is emptying the cistern as fast as the inlet refills it.
Where Home Owner Toilet Repairs Stop
The QBCC's unregulated work list names three cistern parts: a drop valve's washer, a float valve's washer and the suction cup rubber. A home owner who knows what they are doing may repair or replace those three parts without a licence, an approval or a report. The finished work still needs to meet the standards.
Past those three, every toilet repair is licensed territory: a QBCC licensee handles the rest, and the job needs neither a council permit nor a Form 4.
In a Queensland rental, upkeep sits with the owner or manager, and a tenant passes faults on as soon as they notice.
Check for a Silent Leak With Food Colouring
Run the colour test this way: drop some food colouring straight into the cistern, then leave the toilet alone without flushing and wait.
Colour reaching the pan means cistern water is escaping past the flush valve into the bowl. A clear pan puts the flush valve in the clear, so look next at the water level and at the inlet side.
Flush the toilet afterwards to rinse the colour through. Food colouring leaves no stain on a ceramic bowl, so nothing marks.
No colouring in the house? Rest some dry toilet paper high inside the bowl, just above the water line. It should stay dry unless water creeps down; a wet strip means the toilet leaks.
Who Pays for Water a Cistern Wastes
No, a leaking cistern does not qualify for Unitywater's concealed leak adjustment. That policy leaves out water wasted by toilet cisterns, taps, hot water units and appliances.
The owner carries the loss. Repairs and the wasted water both land on the property owner, because ownership of the property side brings responsibility for its leaks.
The bill climbs quietly on a street of family houses. At the last census, Warner households averaged three people, and a cistern that runs around the clock feeds a meter that never rests in a home of that size.
When to Call Us About a Running Cistern
Ring us once the QBCC's three unregulated parts are ruled out, once the colour test shows a leak, or once a cistern will not fill at all.
A hiss that never ends, a cistern refilling by itself, and water pouring from the overflow each call for licensed work. Our toilet repairs page covers what the visit involves.
Running Toilet Questions Answered
Call (07) 3524 7137How do I test my cistern for a silent leak?
Put a splash of food colouring in the cistern and wait without flushing. Colour showing in the pan means the flush valve is letting cistern water through. Flush afterwards, as the colouring cannot stain a ceramic bowl.
Can I fix a running toilet myself in Warner?
Yes, for three cistern parts only: the washer under a drop valve, the washer inside a float valve, and the suction cup rubber. A capable home owner may swap those without a licence, and the work still needs to meet the standards. Anything past those three parts is minor work for a QBCC licensee.
What does it cost to fix a running toilet?
Two things drive the price: the failed part itself, and how easily we can reach the cistern and the stop tap. You get a fixed quote before any work starts, so the figure on the paper is the figure on the invoice.
Who fixes a running toilet in a Warner rental?
Under the Residential Tenancies and Rooming Accommodation Act, the owner or manager carries the repair duty, and the tenant passes faults on promptly. A running toilet is not on the Act's emergency repairs list, so the fix counts as routine and happens within a reasonable time. A toilet that blocks or breaks is on that emergency list.
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