Why Your Toilet Keeps Running
Water escaping somewhere it should not is why a toilet keeps running: past a worn flush valve seal, over the top of the overflow, or straight through an inlet valve that never closes. Working out which of the three is behind the noise takes a few minutes. Most of the fixes belong to a licensed plumber rather than to you.
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Our Teneriffe plumbers see running cisterns constantly. At the last census, 88.4 per cent of homes here were flats or apartments, and every one of those bathrooms holds a cistern working daily.
Renters feel these faults too. A running cistern pushes water through the meter around the clock, and the bill lands on whoever holds the account.
Inlet Valve, Flush Valve Seal and Overflow Explained
Three faults sit behind almost every running toilet. One is an inlet valve that will not shut off. Another is a flush valve seal passing water down into the pan, and the third is a level filled high enough to run out through the overflow.
The inlet valve
refills the cistern after a flush and stops when the float hits its level. A worn or blocked inlet valve fills slowly or never stops filling. When the hiss or trickle keeps going after the refill finishes, the inlet valve is the suspect.
The flush valve seal
holds the stored water back between flushes. Once that seal wears, water slips down into the pan. The inlet valve then keeps topping the cistern up, so the loo sounds like it runs on its own.
The overflow
works as a safety outlet. Excess water runs down it rather than across the floor. A drip from an overflow pipe outside means the cistern is filling past its set level, so the inlet valve or the float needs attention.
Water Runs but the Cistern Stays Low
A cistern that never fills usually comes down to a worn or blocked inlet valve, a float sitting too low, or a stop tap left half turned. Check the stop tap first, because a valve only partly open starves the cistern no matter how healthy the rest of it is.
Water running while the level never rises tells a different story. The flush valve seal may be letting the water out as quickly as it enters, so the cistern can never build a head of water.
Woolstore apartments converted through the 1990s and early 2000s often still run their original cistern fittings, and cisterns of that vintage fail in exactly these ways. A unit above a timber floor adds a second reason to act: nobody wants a slow fault becoming the neighbour's ceiling problem.
Where Home Owner Toilet Repairs Stop
The QBCC lists three cistern parts as unregulated work: the suction cup rubber, the float valve washer and the drop valve washer. Anyone with the appropriate knowledge and skill may repair or replace them, and no licence and no paperwork is required. The result still needs to satisfy the standards under Queensland's plumbing rules.
Everything else inside a toilet is minor work, which a QBCC licensee has to do, with no permit and no Form 4. Opening the cistern, adjusting the float or swapping the inlet valve all sit on the licensed side of that line. Our toilet repairs page is the right next stop.
Rentals follow their own rule. Under Queensland's tenancy rules, the owner or manager looks after repairs, and the tenant passes on any fault straight away.
Check for a Silent Leak With Food Colouring
Drop a little food colouring into the cistern, leave the loo unflushed, and wait. Colour turning up in the bowl means water is escaping from the cistern into the pan, which points at the flush valve seal.
Flush afterwards to clear the dye, because it leaves no stain on ceramic. A bowl that stays clear tells you the seal is doing its job, so the inlet valve and the fill level are the next things a plumber checks.
No food colouring in the drawer? Lay a strip of dry toilet paper at the back of the pan, above the water line. The paper stays dry unless water is creeping down behind it, which indicates a leaking loo.
What a Running Cistern Does to Your Water Bill
No, the utility's concealed leak adjustment does not cover water a leaking cistern loses. Urban Utilities, which supplies this suburb, excludes cisterns along with taps, hot water systems and other water appliances from that adjustment.
The property owner carries responsibility for leaks and their losses on the property. For a landlord whose tenant pays water use charges, a cistern running on for months is money gone quietly. The tenant's first clue is usually the account, not the sound.
When to Call a Plumber
Ring us when the dye test shows colour in the bowl, when the hiss carries on long after every flush, or when the cistern refills itself through the night. Also ring when you rent: report the fault to the owner or manager first, then we deal with whoever books the job.
Queensland's emergency repair list for rentals covers a blocked or broken toilet. A cistern that runs on is not named there, so it counts as a routine repair, handled within a reasonable time. Either way, a running toilet wastes water every hour it waits.
Toilet Questions From Teneriffe
Call (07) 3524 0766Why does my toilet keep running after I flush?
The inlet valve has stopped shutting off, or the flush valve seal is letting water slip into the pan, so the cistern keeps refilling. A level filled past the overflow is the third cause. A hiss or trickle points to the inlet valve, while a cistern that refills itself every few minutes points to the seal.
Can I fix a running toilet myself in Teneriffe?
No, not beyond three cistern parts: the suction cup rubber, the float valve washer and the drop valve washer. The QBCC classes those as unregulated work a capable person may do, and the result still needs to satisfy the standards. Everything else inside a toilet is minor work for a licensed plumber.
Will the water utility cover a running toilet in Teneriffe?
No, Urban Utilities will not cover it. Its concealed leak adjustment excludes water a leaking cistern loses, along with taps, hot water systems and other appliances. The property owner carries responsibility for leaks and their losses on the property.
What is the overflow in a toilet cistern?
The overflow is the cistern's escape route: surplus water runs down it into the pan rather than across your floor. When the inlet valve will not close or the float sits above its correct height, water climbs to the overflow and escapes through it. Some cisterns also run a small overflow pipe to outside.
Call Us and the Loo Stops RunningWe'll call you back.
Ring (07) 3524 0766 and tell us what's wrong. You get $0 call-out fees, a fixed quote before any work starts and same-day where we can, 7 days a week.
To claim your $0 call-out fee, call (07) 3524 0766 today.