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Hidden Leak? Found Accurately, Fixed Without the Demolition

A leak you can't see is still costing you — on the bill, and in the walls. Mason finds hidden leaks with proper detection methods, then fixes them with the smallest access possible.

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Sound familiar?

Signs You've Got a Hidden Leak

  • A water bill that's jumped with no change in habits
  • The water meter spins with every tap and appliance off
  • Damp patches, bubbling paint or lifting floorboards
  • The sound of running water when nothing is on
  • A warm patch on the floor (hot water line leaking under slab)
  • Mould or musty smells that keep coming back

Quick self-test: turn everything off, take a meter reading, wait 30 minutes without using water, read it again. If it moved — you have a leak. Call and tell Mason the numbers.

Find it first. Then cut once.
The fix

How Mason Finds and Fixes Hidden Leaks

1

Confirm it

Meter test confirms there's a real leak and roughly how big — before you spend anything on searching.

2

Narrow it down

Isolation testing splits the house into sections: hot vs cold, inside vs underground.

3

Pinpoint

Acoustic and thermal methods locate the leak precisely — so the repair needs one small access point, not an excavation.

4

Repair & verify

The leak is fixed properly, then the meter test is repeated to prove the house is tight again.

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Why Dr Flush

Proof, Not Promises

Mason has spent 15+ years fixing exactly these problems across the Blue Mountains, Penrith, Hawkesbury and Sydney. You get straight answers, a price before work starts, and a clean home when it's done.

  • Priced by the job — quoted before, not after
  • Licensed, insured & local to Blaxland
  • Clean, tidy and respectful in your home
15+
Years experience
2,000+
Jobs completed
50km
Service radius
5.0★
Local rating
Good to know

Leak Detection FAQs

How do you find a leak under a slab or in a wall?
By elimination first (isolating sections of pipework), then pinpointing with acoustic listening and thermal imaging. The point is to know exactly where to open up before anything is cut — one small hole beats an exploratory dig every time.
My water bill doubled. Is it definitely a leak?
Usually, but not always — a running toilet, a dripping relief valve on the hot water unit, or irrigation can do it too. The meter test sorts it out quickly, and those cheaper culprits get checked first.
Will you have to dig up my slab?
Not necessarily. Depending on where the leak is, options include a spot repair through minimal access or re-routing the line so the slab isn't touched at all. You'll get the options and prices before deciding.
Does Sydney Water give rebates for hidden leaks?
Sydney Water's hidden leak allowance can reduce the excess usage charge on your bill in some cases — once the leak is fixed by a licensed plumber and you apply with evidence. Mason provides the documentation you need.
Where we work

Leak Detection Near You

Hidden leaks found and fixed across Blaxland, the Blue Mountains, Penrith, Hawkesbury, Western Sydney and Greater Sydney.

BlaxlandGlenbrookSpringwoodWinmaleeKatoombaPenrithEmu PlainsSt MarysBlacktownWindsorRichmondParramattaGreater Sydney
Related: Burst pipes · Leaking taps & toilets · Stormwater

Stop Paying for Water You Never Use

Book leak detection and know exactly what's leaking, where, and what it'll cost to fix — before anything is opened up.

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