Sydney, NSW
0404 939 121
Professional Leaking Toilet Repairs - Licensed plumber Sydney - 24/7 service
Toilet Leak Specialists

Leaking Toilet Repairs Sydney

Stop running cisterns, leaking pans, and wasted water with fast professional toilet leak repairs from Panther Plumbing Group across Sydney.

750L/dayWater wasted by running toilets
$1,500/yrPotential annual water bill increase
Same DayToilet leak repairs across Sydney
0404 939 121Request Free Quote

Expert Toilet Repairs

Same Day Service

Rapid response across Sydney to stop water waste immediately.

All Toilet Types

Service close-coupled, concealed, dual-flush, and heritage cisterns.

Water Saving Repairs

Restore efficiency and reduce bills with quality parts and calibration.

Licensed & Insured

Fully qualified plumbers with comprehensive trade insurance coverage.

Sydney Toilet Leak Repair Experts

Fix Leaking Toilets & Stop Water Waste

A leaking toilet is one of the most common and wasteful plumbing problems in Sydney homes. Running cisterns, dripping overflow pipes, and failed pan seals can waste hundreds of litres daily while damaging bathroom floors and inflating water bills by $500-$1,500 annually. Our licenced plumbers diagnose and repair all toilet leak types using premium replacement parts with comprehensive warranties.

All Toilet Types Serviced

Close-coupled, concealed cisterns, dual-flush, heritage low-level, back-to-wall, wall-hung, and smart bidet systems. Expert repairs for Caroma, Fowler, Stylus, Geberit, and Wirquin brands.

Flush Valve & Inlet Repairs

Replace worn seals, faulty inlet valves, broken buttons, and failed flush mechanisms causing running water, constant refilling, and wasted consumption up to 750L daily.

Pan Seal Replacements

Lift toilet, replace deteriorated wax ring or rubber seals, inspect flange condition, reseat securely, and test thoroughly. Prevents floor damage and sewage odours.

Water Efficiency Upgrades

When beyond economical repair, install modern WELS-rated dual-flush toilets reducing water consumption 50-70% compared to older single-flush systems. Government rebates often available.

Professional toilet leak repair service Sydney
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0404 939 121
Root Causes

Why Toilets Leak & Waste Water

Understanding the problem helps prevent costly water bills

Worn Flush Valve Seal

High200-400L/day

Deteriorated rubber seal on the flush valve allows water to continuously leak from cistern into the bowl, causing constant refilling and water waste.

Faulty Inlet Float Valve

High300-750L/day

Stuck or damaged inlet valve fails to shut off water supply when cistern is full, resulting in overflow into the bowl or through the overflow pipe.

Broken Pan Seal

CriticalVariable

Failed wax ring or rubber seal at toilet base allows sewage water to leak onto bathroom floor causing damage, odours, and potential health hazards.

Dual Flush Button Malfunction

Medium50-150L/day

Worn buttons or internal linkages prevent proper flush activation or cause valves to remain open, wasting water with each flush or continuously.

Cracked Cistern or Bowl

CriticalVariable

Hairline cracks in porcelain from age, impact, or thermal stress allow water to seep out, often unnoticed until significant floor damage occurs.

Overflow Pipe Leaking

Medium100-300L/day

Overflow pipe continuously dripping indicates inlet valve not shutting off properly. While designed as safety, ongoing overflow wastes significant water.

Our Process

Professional Toilet Leak Repair Process

Systematic approach ensures thorough repairs and water efficiency

1

1. Diagnostic Assessment

We inspect the cistern internals, flush mechanisms, inlet and outlet valves, pan seals, and connections. Dye testing reveals slow leaks from cistern to bowl.

2

2. Identify Root Cause

Determine whether the issue is flush valve seal, inlet valve, float mechanism, dual-flush button, overflow adjustment, or pan seal requiring targeted repair.

3

3. Parts Replacement

Install premium replacement components: flush valve seals, inlet valves, dual-flush buttons, float assemblies, or complete cistern kits as needed.

4

4. Pan Seal & Mounting

For base leaks, we lift and reseat the toilet with new wax ring or rubber seal, check flange condition, and ensure proper bolt tension to prevent future leaks.

5

5. Adjustment & Calibration

Adjust water levels, float height, flush volume, and overflow pipe position to optimise water efficiency and ensure reliable operation.

6

6. Pressure & Function Testing

Test multiple flush cycles, check for leaks at all connection points, verify proper shut-off, and ensure bowl refills correctly without running.

7

7. Water Efficiency Check

Confirm dual-flush volumes are correct (3L/6L standard) and recommend water-saving upgrades if current system is inefficient or outdated.

8

8. Clean & Educate

Clean work area, dispose of old components, and provide maintenance tips to extend toilet life and identify early warning signs of future issues.

Toilet Systems

All Toilet Types We Service

Expert repairs for modern, heritage, and specialty toilet systems

Close-Coupled Cistern Toilets

Most common design with cistern directly mounted on bowl. We repair or replace inlet valves, flush valves, buttons, and seals for all major brands including Caroma, Fowler, and Stylus.

Universal parts available

Concealed Cistern Systems

In-wall cisterns behind tiles or panels serviced via access buttons. We repair without damaging finishes, accessing internal mechanisms through front panels.

Geberit, Caroma, Wirquin

Dual-Flush Toilets

Water-efficient systems with 3L/6L or 4.5L/9L flush options. Repair includes button mechanisms, diverter valves, seals, and calibration for optimal water savings.

All dual-flush brands

Low-Level Cistern Toilets

Traditional design with cistern mounted on wall above bowl connected by chrome pipe. Repair includes siphon mechanisms, chains, and heritage-compatible parts.

Heritage and modern

Back-To-Wall & Wall-Hung Toilets

Contemporary designs with concealed pipework and wall-mounted pans. We access concealed cisterns and repair carrier frames without removing tiles.

Modern systems

Smart & Bidet Toilet Systems

Electronic toilets with water supply leaks, valve failures, or connection issues. Licensed repairs maintain warranty compliance and functionality.

Electronic systems

Transparent Pricing

Toilet Leak Repair Costs Sydney

Fixed pricing with no hidden fees—know the cost upfront

Cistern Parts Replacement

$180 - $320

Replace worn flush valve seals, inlet valves, buttons, or float mechanisms causing running or leaking. Includes parts, labour, testing, and adjustment.

  • Diagnostic assessment
  • Premium replacement parts
  • Flush testing
  • Water efficiency check

Dual-Flush System Repair

$220 - $380

Repair or replace dual-flush buttons, diverter mechanisms, and valve assemblies. Recalibrate flush volumes to WELS standards for optimal water efficiency.

  • Button replacement
  • Mechanism repair
  • Volume calibration
  • Function testing

Pan Seal Replacement

$280 - $450

Lift toilet, replace wax ring or rubber pan seal, check flange condition, reseat toilet, and test for leaks. Includes new mounting bolts and silicone seal.

  • Toilet removal
  • New wax/rubber seal
  • Flange inspection
  • Remounting & testing

Complete Cistern Overhaul

$350 - $550

Replace all internal cistern components: inlet valve, flush valve, seals, overflow, and buttons. Ideal for older toilets with multiple failing parts.

  • Full parts kit
  • Complete replacement
  • Water level adjustment
  • 12-month warranty

Toilet Replacement

$650 - $1,200

Remove old toilet, supply and install new water-efficient dual-flush model, dispose of old unit, connect to existing plumbing, and test for compliance.

  • New toilet supply
  • Professional installation
  • Old unit removal
  • Compliance certificate
FAQs

Leaking Toilet FAQs

Expert answers from Sydney toilet repair specialists

Why is my toilet constantly running and how much water is it wasting?▼
A running toilet is typically caused by a worn flush valve seal or faulty inlet valve. The flush valve seal deteriorates over time allowing water to leak from the cistern into the bowl continuously. The inlet valve then constantly refills the cistern. A slow leak wastes 30-50 litres daily while severe leaks can waste 200-750 litres daily—adding $500-$1,500 annually to water bills. We replace the faulty component and adjust water levels to stop the waste immediately.
How do I know if my toilet leak is from the cistern or the base?▼
Cistern leaks usually produce a hissing or trickling sound and may have water in the overflow pipe or bowl water level fluctuating. Base leaks show water pooling around the toilet on the floor, often with a sewage smell, and occur where the toilet meets the floor. Use food colouring in the cistern—if it appears in the bowl without flushing, you have a flush valve leak. If water pools at the base, the pan seal has failed.
Can you repair all toilet brands and models?▼
Yes. We service all major Australian toilet brands including Caroma, Fowler, Stylus, Geberit, Wirquin, American Standard, TOTO, and imported models. We carry universal replacement parts and brand-specific components for close-coupled, concealed, dual-flush, and heritage cisterns. For discontinued models, we source compatible aftermarket parts or recommend modern efficient replacement options.
How long does a toilet leak repair take?▼
Most cistern repairs replacing valves, seals, or buttons take 45-90 minutes including assessment, parts replacement, and testing. Pan seal replacements requiring toilet removal and reseating take 1.5-2.5 hours. Complete cistern overhauls or toilet replacements take 2-4 hours depending on complexity and accessibility. We provide accurate timeframes after initial assessment.
Will you need to turn off my water and can I use other fixtures?▼
We only isolate the toilet using its dedicated isolation valve—other taps, showers, and toilets remain fully operational. If there is no isolation valve or it is faulty, we may need to shut the main water supply temporarily (15-30 minutes) while installing a new valve. We always aim to minimise disruption to your household or business.
What is the difference between a wax ring and rubber pan seal?▼
Traditional wax rings create a pliable seal between the toilet outlet and floor flange but can dry out, crack, or compress over time, especially in warm climates. Modern rubber or foam seals are more durable, reusable, and perform better on uneven surfaces or tiled floors. We recommend rubber seals for most Sydney installations as they tolerate movement and last longer in our conditions.
Should I repair or replace my old toilet?▼
If your toilet is under 10 years old and only has one failing component, repair is typically most cost-effective ($180-$350). If multiple parts are failing, the toilet is very old (15+ years), uses inefficient single-flush mechanisms, or has cracks, replacement is better value. Modern dual-flush toilets use 50-70% less water than old models, paying for themselves through reduced bills. We provide honest advice based on your situation.
Do you repair concealed in-wall cisterns?▼
Absolutely. Concealed cisterns are our specialty. We access internal mechanisms through the front flush button panel without removing tiles or damaging walls. Common repairs include inlet valve replacement, flush valve seals, and button mechanism fixes for Geberit, Caroma, and Wirquin systems. Most concealed cistern repairs take 60-90 minutes with zero damage to finished surfaces.
How can I tell if my dual-flush toilet is wasting water?▼
Signs include: both buttons triggering the same volume flush, buttons requiring multiple presses, cistern refilling between uses, constant hissing, or half-flush not operating at all. Test by placing a cup under the flush and comparing volumes—half-flush should be 3-4.5 litres and full flush 6-9 litres. If volumes are wrong or buttons malfunction, the dual-flush mechanism needs repair or recalibration.
What warranty do you provide on toilet repairs?▼
We provide a 12-month workmanship warranty on all toilet repairs and installations. Replacement parts carry manufacturer warranties ranging from 1-7 years depending on the component. If any repaired component fails within the warranty period due to workmanship issues, we return and fix it at no charge. Keep your invoice as proof of service for warranty claims.
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Customer Stories

Sydney Residents Trust Our Toilet Repairs

Hear how Panther Plumbing Group stopped water waste and prevented bathroom damage across Sydney.

"Toilet running constantly for months drove water bill from $300 to $1,100 quarterly. Panther Plumbing Group replaced flush valve seal and inlet valve—toilet finally stops refilling! Saved us thousands. Wish we'd called earlier!"

Margaret Harrison
Leaking Toilet Repairs

"Water pooling around toilet base every morning. Panther Plumbing Group lifted toilet, replaced pan seal and inspected flange. No more leaks or sewage smell. Bathroom floor protected. Professional job with 12-month warranty!"

David Thompson
Leaking Toilet Repairs

"Heard constant trickling sound in our ensuite—cistern was running 24/7 and wasting gallons of water daily. Panther Plumbing Group diagnosed a faulty fill valve and replaced both the valve and the flapper seal. Toilet works silently now and quarterly water bill dropped by $280!"

Christine Baker
Leaking Toilet Repairs
Service Coverage

Toilet Repairs Across Sydney

Fast professional toilet leak repairs available in all Sydney suburbs. Same-day service from licensed plumbers.

Eastern SuburbsInner CityInner WestNorth ShoreNorthern BeachesHills DistrictParramattaRydeSt GeorgeSutherland ShireWestern SydneySouth West Sydney
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24/7 Emergency Service

Stop Water Waste - Book Toilet Repair Today

Call Panther Plumbing Group for fast, professional toilet leak repairs that save water and reduce bills across Sydney.

Call 0404 939 121Request a Quote