How much water does a leaking toilet waste?

A constantly running toilet can waste anywhere from 60 to 200 litres of water per day — that's up to 73,000 litres per year from a single toilet. At Sunshine Coast water rates, this adds up to hundreds of dollars on your water bill annually. Even a slow, intermittent leak (phantom flush) will have a measurable impact.

Why does my toilet keep running after I flush?

The most common cause is a faulty inlet valve that doesn't shut off properly once the cistern is full, or a leaking flush valve (the seal at the bottom of the cistern) that allows water to seep into the bowl. Both cause the cistern to keep refilling. Jay can diagnose and fix the fault in a single visit in most cases.

What is a phantom flush?

A phantom flush is when your toilet refills briefly on its own without being flushed — as if a ghost flushed it. It's caused by water slowly leaking from the cistern into the bowl through a faulty flapper or flush valve seal. Over time it wastes significant water. It's an easy fix for a plumber.

Can you replace a leaking toilet suite in Caloundra?

Yes. If your toilet is old and the cistern internals are repeatedly failing, replacing the entire suite is often more cost-effective than ongoing repairs. Jay can supply and install a new toilet suite — including removing the old one — at a competitive price.

How do I know if my toilet is leaking into the bowl?

Put a few drops of food colouring in your cistern (not the bowl) and wait 15 minutes without flushing. If the colour appears in the bowl, you have a leaking flush valve. You can also listen — a faint hissing from the cistern or bowl is a reliable sign that water is escaping.

Leaking Toilet Repair — Caloundra & Sunshine Coast

Leaking Toilet Repairs

Stop Wasting Water — Fix Your Leaking Toilet

A leaking toilet is one of the most wasteful plumbing problems in a home. Unlike a visible dripping tap, many toilet leaks are silent — water seeping slowly from the cistern into the bowl, running continuously without you noticing. The result is a water bill that keeps climbing with no obvious cause.

Wattle Plumbing & Gas fixes leaking toilets across Caloundra, Aura, Kawana Waters and the wider Sunshine Coast. Jay carries the most common cistern parts and replacement components, so most jobs are completed in a single visit. If the toilet is beyond economical repair, Jay can supply and install a new suite at a competitive price.

How much is a leaking toilet costing you?

A running toilet wastes between 60–200 litres per day. Over a 90-day billing quarter, that's 5,400–18,000 extra litres on your water bill — before a single toilet has been flushed. On Sunshine Coast water tariffs, this can add $30–$80 or more per quarter.

Types of Toilet Leaks We Fix

Running Cistern

Water continuously running into the bowl after flushing. Usually a faulty flush valve seal or flapper. One of the most common — and wasteful — toilet problems.

Phantom Flush

Toilet refills briefly on its own without being flushed. Caused by water seeping slowly from the cistern into the bowl through a worn flush valve seal.

Faulty Inlet Valve

The inlet valve fills the cistern after flushing. When it fails, the cistern overfills or takes too long to fill. Replaced with a quality aftermarket or OEM part.

Leaking Pan Connector

Water or odour leaking from the base of the toilet or from the connection between pan and soil pipe. The rubber seal degrades over time and needs replacing.

Cracked Cistern or Pan

Visible water pooling at the base of the toilet or around the cistern. A hairline crack in the porcelain is a replacement job — Jay can supply and install a new suite.

Flush Button / Mechanism

Dual-flush buttons that stick, don't return, or keep flushing. The flush mechanism can usually be replaced without changing the whole cistern.

How to Check if Your Toilet is Leaking

The food dye test: Put a few drops of food colouring in the cistern (not the bowl). Wait 15 minutes without flushing. If the colour appears in the bowl, your flush valve is leaking. You can also check your water meter — note the reading, don't use any water for 30 minutes, and check again. Any movement means a leak somewhere in your home.

Areas Serviced

Caloundra · Aura / Caloundra West · Kawana Waters · Maroochydore · Sippy Downs · Buderim · and surrounds

★★★★★

"Our water bill had crept up significantly and we couldn't work out why. Jay came out, found a silent toilet leak within 10 minutes and replaced the cistern internals on the spot. Bill was back to normal the next quarter."

Rob & Sarah K. — Kawana Waters

Get a Free Leaking Toilet Quote

Most cistern repairs are completed in a single visit. Jay will give you a clear price before starting.

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FAQs

Leaking Toilet Questions Answered

A running toilet can waste 60–200 litres per day. Over a 90-day billing quarter that's 5,400–18,000 extra litres — before a single flush. On Sunshine Coast water tariffs this is a real cost. Even a slow, silent phantom flush adds up significantly over time.

The two most common causes are a faulty inlet valve (doesn't shut off once the cistern is full) or a leaking flush valve seal (allows water to seep from the cistern into the bowl). Both cause continuous refilling. Jay can diagnose the fault and fix it in a single visit in most cases.

A phantom flush is when your toilet refills briefly on its own — as if someone flushed it, but nobody did. It means water is seeping slowly from the cistern into the bowl through a worn flapper or flush valve seal. It's usually a quick, affordable repair.

Yes. If your toilet is old and the internals keep failing, a full suite replacement is often the more cost-effective long-term solution. Jay can supply, deliver and install a new toilet suite — pan, cistern and seat — and remove the old one. Supply options from budget to premium are available.

Start with the food dye test on your cisterns (described above). Then check your water meter with all taps off for 30 minutes. If either test shows a leak, call Jay. Silent toilet leaks and hidden pipe leaks are the most common causes of unexplained bill increases. See our leak detection service for harder-to-find leaks.