Challenge
The operator faced a growing concern over water loss across their diverse portfolio of water schemes, ranging from 5 to 100 kilometres. These schemes, predominantly featuring non-metallic water mains, presented unique challenges for leak detection due to sound propagation limitations and complex configurations, including “rider” mains. Additionally, customer-side leaks posed a challenge as meters weren’t read, and consumption wasn’t billed volumetrically.
Solution
Recognising the need for specialised expertise, the operator engaged Aqua Analytics to conduct a thorough water loss investigation across their various schemes. Aqua Analytics’ personalised approach involved:
Aqua Analytics deployed a team of leak detection specialists who are experienced in working with non-metallic pipe networks. They utilised specialised acoustic equipment and techniques specifically designed to overcome the challenges of sound propagation in these materials.
The project encompassed a comprehensive investigation of each water scheme, including:
- Boundary Valve Assessment: Thorough inspection and testing of boundary valves to identify leaks and ensure proper isolation capabilities.
- Trunk Main Leak Detection: Systematic leak detection on trunk mains using advanced acoustic technologies.
- Appurtenance Inspection: Examine all accessible appurtenances, such as hydrants and valves, to identify leaks or potential failure points.
- Customer Side Leak Detection: Investigation of leaks on customer properties despite the absence of volumetric billing.
- Data-Driven Reporting and Recommendations: Aqua Analytics compiled detailed reports for each scheme, highlighting leak locations, estimated water loss, and recommendations for repairs or replacements. This information enabled the operator to prioritise maintenance activities and implement effective water loss reduction strategies.
Results
- Over 75 Leaks Identified: Aqua Analytics successfully located and identified over 75 leaks, including major and minor ones, across the various water schemes.
- Thousands of Liters Saved Daily: Repairing these leaks resulted in substantial water savings, amounting to thousands of litres per day across the network.
- Reduced Operational Costs: The reduction in water loss translated into significant cost savings for the operator, primarily through lower treatment and pumping expenses.
- Improved Asset Management: The detailed leak data and recommendations gave the operator valuable insights for proactive asset management and maintenance planning.
Client Benefits
- Water Conservation: The project significantly reduced water loss, contributing to the operator's sustainability goals and responsible resource management. Reducing and managing water loss is a key contract requirement for this private operator, and their partnership with Aqua Analytics enables them to fulfil this obligation and exceed requirements.
- Cost Efficiency: Identifying and repairing leaks resulted in substantial cost savings, enhancing the water schemes' overall financial performance.
- Enhanced Network Reliability: By addressing leaks and improving asset management, the operator ensured their customers a more reliable and resilient water supply.
- Expertise and Innovation: Aqua Analytics' specialised knowledge of non-metallic pipe networks and innovative leak detection techniques proved invaluable in tackling the project's unique challenges.
Conclusion
Aqua Analytics’ comprehensive approach to water loss investigation delivered exceptional results for the private water network operator in New Zealand. By tailoring their methodology to the specific challenges of non-metallic pipes and providing a full-scale network assessment, Aqua Analytics successfully identified and addressed many leaks, resulting in substantial water savings and improved operational efficiency for the client.
