A running toilet is the quietest expensive fault in a property. A cistern that keeps refilling can waste more water than every other fixture combined, and because it makes almost no noise, it often runs for months before anyone reports it. Sedcon Plumbing repairs toilets across Melbourne metro — usually in one visit, usually without replacing the suite.
Common toilet faults and what causes them
- Cistern keeps running — usually a worn outlet valve washer or an inlet valve that will not shut off. The most common toilet fault and the most wasteful.
- Weak or incomplete flush — often a failed flush valve seal, a cistern not filling to the correct level, or a partial blockage in the pan.
- Water on the floor — a perished pan collar, a leaking cistern-to-pan connection, or condensation on the cistern in humid weather. Each needs a different fix.
- Blocked pan — wipes, sanitary items and excess paper. Repeated blockages in the same toilet usually point to something further down the line.
- Loose or rocking pan — failed fixings or a deteriorated seal. Left alone, movement breaks the waste connection.
- Button that sticks or will not return — worn flush mechanism, common on older dual-flush units.
- Whistling or hammering when filling — an inlet valve on its way out, or water pressure too high for the fitting.
How to tell if your toilet is leaking silently
A slow leak from the cistern into the pan often shows no visible movement. Two quick checks:
- Look for a faint, constant ripple or trickle line at the back of the pan when nobody has flushed.
- Wipe the back of the pan dry, wait twenty minutes, and check whether water has tracked down again.
- Turn every tap off and check the water meter. If the dial moves, something is running — a toilet is the usual culprit.
A continuously running cistern can waste tens of thousands of litres a year. On a managed property, that lands on a water bill long before anyone connects it to a toilet nobody complained about.
What we repair
- Inlet and outlet valve replacement
- Flush button and mechanism replacement
- Cistern seals and pan collar replacement
- Blocked pan clearing, including drain machine and jetting where the blockage is further down
- Re-fixing and re-sealing loose pans
- Concealed and in-wall cistern servicing
- Full toilet suite replacement where repair is not economic
Repair or replace?
Most toilet faults are a valve or a seal, and those are worth repairing — the parts are inexpensive and the job is quick. Replacement makes sense when the pan is cracked, when the cistern is an obsolete model with no available parts, or when a suite has been repaired repeatedly. We will tell you which applies before we start.
Toilet repairs in rentals and strata buildings
A blocked or non-functioning toilet in a rental is an urgent repair where it is the only toilet in the property, and it needs to be treated that way. We attend same day wherever possible, coordinate access directly with the tenant, and confirm back to you when it is done.
Where a blockage was caused by wipes or sanitary items rather than a fault in the fixture, we say so in writing — that is usually what determines whether the cost sits with the tenant or the owner. In apartment buildings we also note whether the blockage was within the lot or in a shared stack.
Frequently asked questions
Why does my toilet keep running after flushing?
Almost always a worn outlet valve washer or an inlet valve that is not shutting off. Both are inexpensive parts and a quick repair. Left running, a cistern can waste tens of thousands of litres a year.
How much does a toilet repair cost in Melbourne?
Most running toilet repairs fall in the range of $180 to $350, covering the call-out and a standard valve or seal replacement. A full suite replacement costs more and depends on the fixture chosen. We quote before starting — see our Melbourne plumber cost guide for indicative ranges.
Can I unblock a toilet myself?
A plunger is worth trying. Place it over the outlet to form a seal and push firmly several times. Avoid flushing repeatedly, which causes an overflow, and avoid chemical drain cleaners — they rarely clear a real blockage and can damage the pan and pipework. If plunging does not clear it, the blockage is further down the line.
Is a blocked toilet an emergency in a rental property?
Where it is the only toilet in the property, yes — it is treated as an urgent repair. We attend same day wherever possible and after hours where needed.
Why is there water on the floor around the toilet?
Usually a perished pan collar, a leaking cistern-to-pan connection, or condensation on the cistern in humid weather. They look similar and need different repairs, so it is worth having it identified rather than sealed over.
Toilet repair in Melbourne? Call or text Sedcon Plumbing on 0413 647 557. VBA Licence 120392, fully insured, servicing Melbourne metro seven days.