Specialists in Active Leak Detection Services

Aqua Analytics is the leading active leak detection services provider in Australia and New Zealand. Our professional and data-driven approach to water network management projects, sees us regularly engaged by the leading water utilities and municipalities in the region.

Servicing water reticulation assets, our state-of-the-art technology, lengthy experience, and expertise allows the Aqua Analytics team to remain at the forefront of the water loss management industry. Our practical technical knowledge of water main leak detection, coupled with our understanding of a water operators digital goals, puts us at the forefront of the water loss and leakage reduction industry in Australia and New Zealand.

Active detection of water leaks is a crucial aspect of non-revenue water management in water supply networks. The systematic use of technology and skill to survey a water pipeline network allows us to identify leaks that do not present themselves during routine water utility inspections and many are buried and never surface for customer reporting.

Aqua Analytics relies on modern technology and proven industry best-practice to deliver expert active leak detection services. Our water network technicians survey specific areas using acoustic sounding technologies to find the location of any water network leaks before reporting them via field tablets for real-time operational awareness and to reduce leak run-times.

With over three decades of industry experience, the Aqua Analytics experts are internationally renowned for their knowledge and experience in major water supply networks. We have tailored our water loss reduction strategies to provide Australian and New Zealand municipal clients with the best results for effective water loss management.

We put positive customer experience at the forefront of everything we do. At Aqua Analytics, our team undergo customer service training to provide the best experience for our utility customers. Our technicians provide industry-leading services on long and short-term projects across both Australia and New Zealand using the best leak detection technology.

Ready to learn more about active leak detection?

Get in touch with the Aqua Analytics team today to determine how our technicians can support your water utility project and reduce water leakage.


Years Experience

In helping water utilities throughout Australia and New Zealand better manage their water networks with technology.


Kilometres of Leak Detection

Our team has completed over 150,000 km of active water main leak detection throughout Australia and New Zealand.

The Value of Active Leak Detection

Actively detecting and pinpointing water network leaks can be viewed as the easy task of water loss management projects. However, it is a key stumbling block if not correctly implemented. At Aqua Analytics, we study and reflect on all our projects and industry practices to provide services that deliver successful results.

By working with Aqua Analytics, you’re engaging one of the regions most experienced and knowledgeable teams to implement an active leak detection project. It’s our innovative processes and leak detection methodologies that allow us to continue to stay at the forefront of the industry; providing comprehensive, reliable and industry-leading services.

What are the key steps for a successful leak detection project?

Alignment with utility goals – ensuring the team you engage is working towards solving your problems and contributing towards all strategic goals of your utility (for example, our teams undergo customer service training given they have regular contact with domestic and commercial water customers).

Industry-leading equipment – a robust ‘leakage toolbox’ that includes listening sticks, ground microphones, leak noise correlators and acoustic leak detection devices (such as smart water IoT devices).

Innovative leak detection processes and methodologies – ensuring procedures leverage the power of new acoustic leak detection technologies and conducting prompt analysis of field data to reduce leak run-times and minimise leak impact on customer perceptions.

Leakage management software and data management – recognising the opportunity to collect other valuable data from throughout the water network (includes intelligence on broken assets, missing fittings, and customer theft). Our leak detection data management software portals are used daily by our customers to understand site works, NRW and status of repairs.

Engagement as a true partner – longer-term arrangements where we are an extension of your existing teams for leak detection and water loss management.

The purpose of active leak detection is to find all the leaks that do not surface or come to the attention of the water utility through their standard procedures (for example, customer contact centre, insufficient supply, or loss of water). The detection process involves teams of skilled leak detection technicians actively surveying an area to find leaks, generally using acoustic sounding techniques or similar. This may be in response to an increase in the minimum night flow (MNF) if the area is sectorised into a DMA or Water Supply Zone, an increase in the output from a treatment works or supply reservoir, or simply as a result of a systematic, regular leak detection program at predetermined intervals.

Many technologies for water main leak detection utilise acoustic principles to identify and pinpoint leak locations. A pressurised water pipe will create a unique acoustic signature at the leak location due to the pressure differential between the inside and outside of the pipe—the water main acts as a medium for transmitting the acoustic signature of the water leak.

When water is escaping the pipe under pressure, it makes a distinct ‘hissing’ sound that can carry significant distances along the length of the water pipe and be detected on nearby service connections, hydrants or stop valves. Several factors influence the distance which the leak can travel but are primarily the pipeline material and diameter. (For example, a 100 mm cast iron water main will propagate the acoustic signal much better than a 300 mm PVC water main). Key factors that influence leak detection capability and accuracy:

– Pipeline material

– Pipeline diameter

– Pipeline pressure

– Leak size

– Leak type (or more specifically, leak shape)

– Backfill type

– Access to appurtenances

– Ambient and environmental noise

Aqua Analytics uses a range of technologies when undertaking active leak detection work. Acoustic technologies are the primary means of detecting and locating water main leaks. This method of acoustic leak detection is a systematic method of using acoustic equipment to survey the water network, identify leak sounds, and pinpoint the exact locations of any underground leaks. It is carried out in a systematic manner, walking all streets, and listening on all available fittings (For example, acoustic leak detection surveys are similar to a postman who needs to go down every street in a particular suburb to deliver the mail).

The most critical technology of a leak detection technician is an amplified microphone that determines the presence of a nearby leak on a connection or appurtenance on the water network.

To pinpoint a leak, more advanced technologies will be used, such as a leak noise correlator or ground microphone. At Aqua Analytics, we also use leak noise loggers (such as the Gutermann ZoneScan NB-IoT or Ovarro Enigma) from time to time when permanent leak detection is required in high consequence locations or when challenging leaks need to be located. A leak detection toolbox should contain the following technologies:

– Amplified acoustic listening sticks

– Manual listening stick

– Ground microphone

– Leak noise correlators

– Pipe and cable locators

– Correlating leak noise loggers

– Trunk main hydrophones

– Pressure transient monitoring devices

If you already have a water loss management program underway, we can provide specialist active leak detection services. Aqua Analytics also provides ‘Leakage-as-a-Service’. These programs see us deploy acoustic leak detection IoT devices under a fully managed agreement to ensure uptime reliability and immediate leakage insights. This approach is essential for high consequence locations, such as CBD locations or heavy pedestrian / roadway environments.

Trunk mains, typically assets that are over 350 mm in diameter, require a different approach to reticulation assets when it comes to active water leak detection. These are often assets critical to operations, and the current condition and presence of leaks must be well understood to reduce the likelihood of failure.

Trunk main leak detection is challenging due to the reduced sound propagation in larger diameter pipelines. Many utilities avoid trunk main leak detection activities due to a perceived lack of leakage on these assets; however, many examples in Australia and New Zealand prove this is inaccurate. Aqua Analytics can deliver trunk main leak detection using the following solutions:

Free-swimming leak detection technologies – a cylindrical device is inserted into a live pipeline, propelled by the water flow, and is captured downstream. The captured data is downloaded, analysed, and the leak location is determined.

Tethered leak detection technologies – a device is inserted into a live pipeline, attached to a long cable, and propelled by the water flow. An operator will listen for the acoustic signal from the device hydrophone and determine if any leaks are present.

Trunk main correlators – specialised hydrophones or accelerometers are placed on the trunk main (typically at 1-2 km spacings), listening for specific frequencies and applying traditional correlation equations to detect the presence of leaks.

Real-time trunk main monitoring – specialised hydrophone devices can monitor large diameter pipelines in real-time for changes in operating conditions that may indicate a new, developing or growing leak.

The Aqua Analytics team consists of internationally renowned experts on water leakage reduction, non-revenue water (NRW), and acoustic leak detection methodologies. Over several decades, we have developed customised water loss reduction strategies for conditions in Australia and New Zealand to ensure we achieve lower levels of water loss. We are viewed as leaders in active leakage detection through our long-term engagements on projects in Sydney, Melbourne, Adelaide, Brisbane and throughout New Zealand. We also pride ourselves on delivering excellent customer service and finding solutions to problems where others cannot. If you are looking to achieve results from your active leak detection project,  please contact us today by giving us a call, or through the enquiry form below.

Get in touch with Aqua Analytics

With offices across the region, we are well placed to promptly assist you. We try to respond to enquiries during the same business day.

Need help with your water network?

Aqua Analytics supports utilities with operational success in the areas of water loss management, active leakage control and all aspects of technology-driven smart water projects. Let us help you with our expertise in active leak detection.

Contact Us

Trusted by leading water utilities.

For over two decades, our team has been trusted by the regions leading water utilities to deliver results.

Aqua Analytics were easy to communicate with, very responsive and delivered the project with an outstanding level of professionalism. Great company, would use again!

The Aqua Analytics’ team was able to quickly mobilise and assist us with our water loss problem. They found a major leak which immediately reduced our baseline.

Aqua Analytics has seamlessly delivered our project since we have a single contact for pressure transient device procurement, installation and ongoing device maintenance.

Latest Updates

Read our latest news and blog posts on all things relating to smart water technologies, water loss management and water network solutions.

Pressure Transients in Water Networks

  • January 14, 2022
Pressure Transients Explained Pressure transients or ‘water hammers’ are transient events that occur in water pipeline networks as a result of valve opening/closing and pump starting/stopping. Pressure transients can have a severe impact on network performance and efficiency with pipe...

Multi-Year Project with Yarra Valley Water Commences

  • February 4, 2022
Originally published on 29 October 2021 Several months ago, Yarra Valley Water, one of the largest water corporations in Australia, appointed Aqua Analytics as its consultant to deliver active leak detection services for the corporation’s water distribution area. Both organisations...

Drought and Water Loss Reduction Activities

  • February 4, 2022
The Current Situation Many parts of Australia, and specifically New South Wales, are currently experiencing severe drought conditions. Next week, on 10 December, the Greater Sydney region will move to Level 2 Water Restrictions with dam levels falling to just...

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