Technology-Driven Pipeline Condition Assessment

Pipeline Condition Assessment is undertaken using state of the art technology, comprehensive data collection, and a wealth of experience in the industry to help municipal and private organisations make better decisions about their ageing assets. Aqua Analytics provides leading pipeline condition assessment services across Australian and New Zealand water supply networks.

Inadequate condition assessment data often leads to unnecessary replacements and repairs on existing water pipe networks — thus, pipelines with substantial remaining useful life end up getting replaced. Aqua Analytics conduct meticulous inspections and analysis to help our customers make better decisions about repairing, replacing, and remediation of their pressurised water and wastewater pipeline assets. Our comprehensive analysis determines the integrity of specific pipe sections and pinpoints which ones require replacement or remediation.

Why undertake a condition assessment of your water pipelines?

Condition assessment provides asset owners with the data required to close the information gap when determining the future of pressurised water and sewer rising mains. More thorough inspections enable better asset management decisions regarding the repair, replacement or rehabilitation of critical water mains and sewer rising mains.

We have developed our strategies and approach to pipeline condition assessment to service water utility networks internationally. Our skilled technicians operate across Australia, New Zealand, and Asia. We have access to a team of professional engineers to assist with all aspects of your condition assessment project.

Ready to learn more about pipeline condition assessment?

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


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


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

Technology Driven Pipeline Condition Assessment

We provide non-invasive pipeline condition assessment services across Australia, New Zealand and Asia for municipal supply networks and privately owned and operated pipelines (including ports, mining facilities and other critical industrial operations). Our pipeline condition technology is state of the art, collecting comprehensive asset condition data, and, when coupled with a wealth of experience in the industry, can help private and government bodies make better asset management decisions. Pressure transient monitoring is also a crucial aspect of pipeline condition assessment projects.

Inadequate condition assessment data leads to unnecessary replacements and repairs on existing water pipe networks. Often these projects are part of a larger smart water network initiative, or may contain aspects of leak detection or real-time monitoring to add more value and get a better snapshot of asset condition and risk.

Why are the legacy approaches of condition assessment outdated?

Too often, utility companies spend money replacing ageing water or wastewater pipelines based on inadequate pipeline conditions or leak detection data. This data may include soil corrosivity, spot checks on wall thickness at convenient locations or desktop assessments that don’t consider any ‘ground truth’ information.

Other water utilities adopt reactive approaches to bursts (or pipeline age) rather than undertaking technology-driven pipeline assessment activities to prevent them. Despite increased spending on pipeline testing and real-time pipeline monitoring, the information gap around buried pipeline conditions still exists despite non-invasive, non-disruptive technologies being available. These technologies provide technicians to collect higher quality data for asset management decision making. Using these advanced data collection technologies and their associated data analysis, Aqua Analytics bring pipeline condition assessment into the 21st century and allow our utilities to be more resilient, proactive, and comprehensively managed.

Read more about what causes pipeline failures nd water main breaks.

Aqua Analytics uses non-invasive, non-disruptive Tonal Pipe Assessment™ (TPA) from KenWave Solutions to conduct water pipe condition assessments. This acoustic pipeline assessment technology is designed for use on in-service pipes of all standard materials and diameters. Tonal Pipe Assessment technology will provide detailed, reliable condition assessment and leakage information, including average wall thickness and strength for discrete pipe segments.

Our pipeline assessment technologies operate without disruption to your regular network operations and pose no risk of damage to the asset. The device is installed on the pipeline during normal operating conditions, and data measurements are collected for analysis by expert engineers.

KenWave’s TPA represents the next evolution of leak noise correlators with improved sensor sensitivity and the ability to collect multiple data types simultaneously, all with a focus on safety and ease of use. For example, our ultra-sensitive hydrophones sit behind an acoustically transparent impermeable high-pressure membrane, so that they never have to enter the fluid column.

Being an external tool, TPA can be attached to various fittings to inspect almost any water main or sewer rising main. Where fittings or valves are not available, both sound source and sensors can be attached directly to the pipe surface through small vacuum excavations on the pipeline.

Unlike acoustic leak detection, which relies on leaks or flowing hydrants for a sound source, TPA uses a tuneable valve box or sonar introduced test signals. These introduced signals are specific to each diameter and material combination, without any risk of introducing water hammer to determine pipeline condition.

A physics-based acoustic model of pipes using ground propagation, dynamic loading, and impedance effects gathers and analyses the sensor data. Special post-processing processes are used to handle spurious noises such as those from vehicle traffic.

Lastly, a thermodilatohydrometer or THD, uniquely allows TPA to correct for the effect of changes in water temperature, pressure, and dissolved gas content on the acoustic dispersion curve.

First, we develop a multi-parameter acoustic model for the pipe to which we are inspecting. Test signals are then computed and introduced via the TPA sound source. These introduced signals are then measured downstream by the TPA sensors.

We then use the TPA technology to compare the models with the measurements and deduce wall properties and anomaly locations. Results are then validated, and the TPA database and modelling algorithms are updated to make the next inspection more accurate. This improved accuracy has immense benefits when conducting water pipe condition assessments. We can track this data over time and determine the best possible solutions for the water pipe network.

During most pipeline condition assessment projects, we also simultaneously collect pressure transient data using devices from Syrinix.

Our non-invasive TPA technology can be used to inspect pipes that transfer potable water, wastewater, process water, hot water, chilled water, or glycol. The TPA technology is also designed for studying non-metallic and plastic pipes (including Asbestos Cement, PVC, MDPE, HDPE and GRP).

We also utilise the TPA technology for large-scale asbestos cement assessment projects when a water utility has a large proportion of AC mains and needs to prioritise its renewals and investments. Many cities and towns in Australia, New Zealand, Singapore, and Hong Kong face a problem with their ageing asbestos cement and metallic pipelines, with billions of dollars in renewals required over the next five decades.

Aqua Analytics can also inspect mixed material pipes, such as when a small section has been repaired with ductile iron or PVC. The following table summarises the pipes which TPA can examine and the type of data it provides.

Condition Assessment large diameter water pipelines

Cities and towns around Australia, New Zealand and Asia are facing an ageing pipeline infrastructure crisis. Disruptive pressurised water and wastewater main breaks all stem from severe underinvestment over recent decades. At the same time, many small and medium-sized water utilities do not have the financial capacity to upgrade significant amounts of their network.

Aqua Analytics utilise state of the art TPA technology to conduct non-invasive pipeline condition assessments. With our leak detection technology, we can find what needs fixing or replacing and identify what is in good shape, so it stays in the ground. This approach identifies the specific sections of the pipeline that are at risk of failure, so proactive repair works can be undertaken before it results in a significant water main failure.

The assessment data we collect assists with pipeline asset management and renewal planning to ensure a sensible risk management approach to capital investments. At Aqua Analytics, we can use granular pipeline condition data to make better decisions about asset replacements and rehabilitation, ensuring pipelines with residual remaining useful life are not prematurely replaced.

The Aqua Analytics technicians are passionate about providing water pipe condition assessment services. Our technology driven approach provides significant insights into the state of your pipe network for informed asset management. Whether you are looking for assistance on a long- or short-term project regarding water pipe assessment, monitoring, or management, Aqua Analytics will deliver the best solutions.

Aqua Analytics have inspected over 150,000 kilometres of active water mains and apply more than 20 years of industry experience when conducting pipeline assessments. Our skilled technicians conduct advanced evaluations and collect data about aspects of a pipeline that others miss. Technology-driven evaluations aren’t conducted sitting behind a computer. We go on-site to collect ‘ground truth’ information, so we can make the most informed decisions.

If you want to discuss our non-invasive and non-disruptive technology to assess the conditions of your pipelines, or your overall asset management goals, please contact us today.

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.

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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.

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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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