The City of Logan, Australia had already achieved significant success with their ZONESCAN 820 lift & shift program. Building on this momentum, they implemented a 300-point ZONESCAN NB-IoT system in May of 2021.
THE CHALLENGE
Despite the initial success, the city faced the ongoing challenge of detecting and managing water leaks in their utility system. These leaks not only wasted valuable resources but also incurred significant financial losses.
THE SOLUTION
The ZONESCAN NB-IoT system was deployed to continuously monitor the water utility network. In the first few months, the system identified a total of 23 leaks, including both mainline and customer-side leaks. The city meticulously recorded every aspect of the found leaks, noting details such as identification-to-stoppage times and gallons lost. One notable leak was a non-surfacing leak caused by a damaged road conduit, which was particularly costly.
RESULTS
The early detection of large and costly leaks provided a near full return on investment within just two months. The system saved an estimated $261k USD annually in non-revenue water. This startling success led the city to invest in creating purpose-built, ultrasecure chambers to better cover their mixed material system with NB-IoT Loggers where no valves are present.
Key Figures
- Pipe Info: 100mm (4 in.) PVC main & 20mm (0.75 in.) poly road conduit
- Correlation Score: 100%
- Logger Spacing: 77.4m (254 ft)
- Total Time from Identification to Stoppage: 29.45 hrs
- Leakage Rate: 97.52 L/m (25.76 gal/m)
- Actual Non-Revenue Water Loss: $538.00 USD or 172 KL
- Total Estimated Non Revenue Water Loss Annually (in USD): $147,133.00
