4.9 from 69 Google reviews Read reviews Blog
Home / Plumbing services / Leaking toilets

Leaking toilet repairs, North Shore

Toilet running all night, or water round the base?

A cistern that hisses and trickles into the bowl, a flush that needs holding down, or a puddle that keeps coming back at the base. Most of it is a valve or a seal, and we carry the common ones. Same day in most cases.

  • Same day in most cases
  • Common valves and seals on the van
  • Upfront pricing, agreed before we start
  • Licenced plumbers, licence 227192C

Sound familiar?

  • "It keeps running after we flush." The inlet valve is not shutting off, so the cistern keeps filling and trickling into the bowl.
  • "There's water on the floor round the base." A seal between the cistern and the pan, or the connection at the floor, has failed.
  • "The flush is weak, or we have to hold the button down." Usually the outlet valve, or the buttons and linkage that work it.
  • "It's an in-wall cistern and we can't see anything." We open the access panel behind the buttons. The valves are the same, just harder to reach.

What happens if you leave it

A running toilet wastes water every hour of the day, and the bill shows it. Water at the base is worse: it soaks under the pan into the floor, and on a suspended timber floor that becomes rotten boards and a much bigger repair than a set of seals.

How it goes

Found, priced, fixed, tested

  1. Ring or book online. Same day in most cases. A photo of the inside of the cistern helps us bring the right valve.
  2. We find the leak. The cistern, the valves, the seals and the connection at the floor, tested one at a time.
  3. You get the price. Repair or replace, before we start.
  4. Fixed and tested. New valves or seals in, flushed and checked for leaks. If a part has to be ordered, we leave the toilet working in the meantime.

One of our jobs

A toilet leaking on the floor, fixed

Toilet pan lifted, showing the outlet connector at the floor
The toilet lifted. Testing showed the water was getting out at the drainage connection.
Old toilet seal held in a hand, stained where water had been getting past
The seals were damp and stained where water had been getting past.
Open toilet cistern with a new inlet valve and connector fitted
A new inlet valve and connector in the cistern, and new seals all round.
Toilet back in place on a tiled floor, sealed round the base
Back in place, sealed round the base, tested, and dry.

Repair it or replace it? A straight answer

Most toilets are fixed with new valves and seals. We will tell you when one is not worth it.

When a repair is right

  • It is a valve, a button or a seal
  • The pan and cistern are not cracked
  • Parts for that cistern are still made

When to replace it

  • The pan or the cistern is cracked
  • Parts for that cistern are no longer made
  • It is an old single flush that keeps costing you on the water bill

We price the new suite and tell you what it means for the tiles and the floor before you commit.

Before you book

What people ask us

What will it cost?

It depends on what has failed and the type of cistern. You get the price before we start. Upfront pricing, agreed before we start.

Will we be left without a toilet?

No. If a part or a new suite has to be ordered, we get the toilet working well enough to use in the meantime.

Do you do in-wall cisterns?

Yes. We work through the access panel behind the flush buttons, and carry the common in-wall valves.

How do I check if it's leaking?

Listen for a hiss or a trickle long after the flush. Or put a few drops of food colouring in the cistern, wait half an hour without flushing, and see if the colour shows in the bowl.

Toilets on the North Shore since 2007

Our job records run from 2016. Since then we have done more than 1,600 toilet jobs, from a new inlet valve to a whole new suite. Licenced plumbers, contractor licence 227192C.

From our Google reviews

I called STS to fix a faulty cistern. David fixed the problem quickly by replacing the inlet valve.

Shaun C., Google review

Appreciated the plumber calling whilst on site to provide a full assessment of what needed to be done. Job was done quickly after my initial contact.

Lisa M., Google review

The final price was exactly what he quoted. We will definitely use them again, highly recommended.

Glenn Crouch, Google review

Toilet running or leaking? Book a plumber.

Same day in most cases. We find the leak, give you the price and fix it, and nobody is left without a toilet.

Old fashioned service. Modern day plumbing.

Since 2007

Common questions about leaking toilets

How do I know my toilet is leaking?

The common ones are a cistern that never stops running, water sitting on the floor at the base, a flush that will not clear the bowl, or a damp smell in the room that does not shift. A cistern that runs quietly can waste a great deal of water before anyone notices, so it is worth listening for.

What causes it?

Usually the inlet valve washer, which lets water keep overflowing from the cistern into the bowl. After that it is the seals between the cistern and the pan, which show up as water on the floor, or the outlet valve, which stops the toilet flushing properly.

Can you fix it on the same visit?

Most of the time, yes. We carry the common inlet and outlet valves and seals. If the pan or the cistern itself has cracked, we will make it usable, order the replacement and come back to fit it.

I only have one toilet. Will I be without it?

No. If a part has to be ordered we will get it working well enough to use in the meantime, and tell you when the new one is coming. Nobody gets left without a toilet overnight.

Do you repair or replace?

It depends on the age of the suite and what has failed. A valve or a seal is a repair. A cracked pan, a cistern past parts, or a single-flush suite that is costing you on the water bill is usually worth replacing, and we will tell you which you are looking at before you spend anything.

Will a new toilet actually save water?

A dual flush suite uses a good deal less than an old single flush, and a cistern that has been quietly running is costing you more than either. If your toilet is old enough to be on the way out, the water saving is part of the sum.

Are you licenced and insured?

Yes. NSW licence 227192C, and our own team on every job.

Word gets around

Neighbours telling neighbours. Give us a call and spread the word.

Book a plumber for the toilet

Tell us what it is doing and the suburb you are in. If water is running onto the floor, turn off the tap behind the toilet and ring us.

Office hours: Monday to Friday, 7am to 5pm.

A photo of the inside of the cistern helps us bring the right valve.

Book a site visit

Optional, and it often saves a trip.

No charge for the visit. You get the price before we start. We call back within 24 hours, guaranteed, and your details are used for your job and nothing else.

Need a local plumber?

Ring the office and we will tell you what it usually is, what it usually costs and when we can be there.