Underground Water Leak Detection Beneath Brick Paving in Sorrento, Perth
Perth Leak Detectors recently attended a property in Sorrento, Perth, to investigate a concealed underground water leak causing an estimated water loss of 800 millilitres per minute.
The leaking pipe was located beneath brick paving, with no obvious indication of the exact failure point from the surface.
Using a combination of tracer gas leak detection and specialist acoustic listening equipment, Perth Leak Detectors accurately pinpointed the underground leak before excavation began.
This allowed the affected section of pipework to be identified so subsequent excavation could be targeted, reducing unnecessary paving removal and disruption to the property.
Project Overview
Location: Sorrento, Perth, Western Australia
Problem: Hidden underground water leak
Water Loss: Approximately 800 mL per minute
Leak Location: Underground pipework beneath brick paving
Detection Methods: Tracer gas leak detection and acoustic leak detection
Services: Underground water leak detection, concealed pipe leak detection and burst pipe location
Outcome: Underground leak accurately located before excavation, allowing targeted access to the affected pipework
Investigating an Underground Water Leak in Sorrento
The property was experiencing unexplained water loss of approximately 800 millilitres per minute.
Although the leaking pipe was concealed beneath brick paving, the exact location of the fault could not be determined through visual inspection alone.
Underground water leaks can be difficult to locate because escaping water may travel through soil and surrounding materials before becoming visible at the surface.
In some situations, there may be little or no visible evidence directly above the damaged pipe.
For this investigation, Perth Leak Detectors used two complementary leak detection technologies to narrow down the source of the water loss.
Tracer Gas Leak Detection Beneath Brick Paving
Tracer gas leak detection is a specialist technique used to investigate difficult-to-locate leaks in suitable pipe systems.
A tracer gas mixture can be introduced into the pipework under controlled conditions. When gas escapes through a damaged section of pipe, specialist detection equipment can identify where it migrates towards the surface.
This method can be particularly useful when investigating concealed water leaks beneath:
- Brick paving
- Concrete slabs
- Driveways
- Underground pathways
- Garden areas
- Other inaccessible surfaces
During the Sorrento investigation, tracer gas leak detection was used alongside acoustic equipment to help pinpoint the concealed underground fault.
Acoustic Leak Detection Used to Confirm the Leak Location
Perth Leak Detectors also used specialist acoustic listening equipment to investigate the underground pipework.
When pressurised water escapes from a damaged pipe or connection, it can generate sound and vibration that travels through the pipe and surrounding materials.
Acoustic leak detection equipment helps technicians identify these signals and narrow down the likely source.
By combining tracer gas and acoustic detection during the Sorrento investigation, the underground leak was accurately located before excavation commenced.
Using more than one detection method can be particularly useful when a leak is difficult to isolate using a single technique.
Hidden Water Leak Losing Approximately 800 mL Per Minute
A continuous water leak of 800 millilitres per minute can result in substantial water wastage.
If the leak continues at that rate, the estimated loss would be:
- 48 litres per hour
- 1,152 litres per day
- 8,064 litres per week
- 34,560 litres over 30 days
This demonstrates how a concealed underground leak can waste thousands of litres of water without producing obvious flooding.
Prompt investigation helps identify the source so appropriate repairs can be arranged before further water is lost.
Why Accurate Leak Detection Matters Beneath Brick Paving
Locating a leaking pipe beneath paving without specialist equipment can involve unnecessary lifting of bricks and excavation across multiple areas.
Professional underground leak detection helps identify the likely location of the fault before the surface is disturbed.
For the Sorrento property, accurately pinpointing the underground leak meant the plumber could access the affected section of pipework directly.
This approach can help:
- Minimise unnecessary brick paving removal
- Reduce exploratory excavation
- Limit disruption to surrounding surfaces
- Reduce labour and reinstatement requirements
- Help control repair costs
- Allow more targeted access to damaged pipework
- Reduce ongoing water loss by enabling repairs to proceed sooner
Although excavation may still be required to expose and repair the damaged pipe, locating the leak beforehand makes the process more targeted.
Signs of an Underground Water Leak Beneath Paving
Underground water leaks are not always immediately visible.
Warning signs may include:
- Unexplained increases in water bills
- Continuous water meter movement when fixtures are turned off
- Reduced water pressure
- Damp patches around paved areas
- Water appearing between paving joints
- Persistent wet areas near driveways or pathways
- Sounds of running water when no taps are operating
- Unexplained water loss from the property’s plumbing system
These symptoms may indicate concealed water loss and should be investigated to establish the cause.
Professional Underground Leak Detection in Perth
Perth Leak Detectors provides specialist Underground Leak Detection for buried water pipes and concealed plumbing throughout the metropolitan area.
Our detection capabilities include Tracer Gas Leak Detection, Acoustic Leak Detection, Water Leak Detection and Hidden Leak Detection.
Led by Luke Holyoak, with more than 25 years of industry experience, Perth Leak Detectors uses appropriate specialist technology to investigate difficult-to-locate water leaks across residential, commercial and industrial properties.
The Sorrento project demonstrates how combining tracer gas and acoustic detection can help accurately locate underground water loss beneath paved surfaces before unnecessary excavation begins.
Further Leak Detection Information
Hidden underground leaks can often be located before paving or concrete is removed. Learn more about How Are Hidden Water Leaks Detected? and Can a Water Leak Be Found Without Digging? to understand how specialist equipment helps pinpoint concealed pipe failures.
Frequently Asked Questions
How do you find a water leak beneath brick paving?
Specialist techniques such as tracer gas and acoustic leak detection can be used to investigate underground pipework and narrow down the likely leak location before paving is removed.
Can tracer gas detect underground water leaks?
Yes. Tracer gas can help locate leaks in suitable underground pipe systems by identifying where gas escapes from damaged pipework and migrates towards the surface.
Can acoustic leak detection locate leaks beneath paving?
Yes. Acoustic equipment can detect sound and vibration associated with water escaping from pressurised underground pipes, depending on pipe material, depth, water pressure and surrounding conditions.
Is losing 800 mL of water per minute a serious leak?
A continuous leak of 800 mL per minute can waste approximately 1,152 litres per day or more than 8,000 litres per week. Investigating the source promptly can help prevent further water loss.
Do you need to remove brick paving to locate an underground leak?
Not always. Non-invasive leak detection methods can often identify the likely location before paving is lifted. Targeted excavation may still be required to expose and repair the pipe.
Why use both tracer gas and acoustic leak detection?
Different methods identify different characteristics of a leak. Combining suitable techniques can help narrow down difficult leak locations and provide additional information before excavation.
Do you provide underground water leak detection in Sorrento?
Yes. Perth Leak Detectors provides underground water leak detection in Sorrento, surrounding northern suburbs and throughout the Perth metropolitan area.
Need Underground Water Leak Detection in Sorrento?
If you are experiencing unexplained water loss, rising water bills or suspect a concealed leak beneath paving, concrete or underground surfaces, Perth Leak Detectors can investigate the source.
We provide professional underground water leak detection throughout Sorrento and the wider Perth metropolitan area.
Contact Perth Leak Detectors for specialist water leak detection.
Call 1300 532 577 or 0474 770 021
Connect with us on Facebook.
See our Google Reviews.