Case Glostrup Supply
Case: Monitoring the water distribution network at Glostrup Forsyning
Danish Water Innovation ApS has a close collaboration with Glostrup Forsyning, with whom we help monitor their drinking water supply. With innovative ZONESCAN AI NB-loT data loggers from Gutermann, supplemented by our specialist knowledge within reducing water loss in the drinking water network, we collaborate to reduce NRW at Glostrup Forsyning
About Glostrup Supply
Glostrup Forsyning is a multi-utility company that supplies drinking water to approx. 23,300 private customers as well as a significant number of business customers. The municipality has almost as many jobs as inhabitants, making industrial water a significant part of total consumption.
The water supply annually extracts approx. 1.33 million m³ from 13 spring locations, and the establishment of a new waterworks with a capacity of approx. 1.7 million m³ per year. The supply has approx. 45 employees, working across supply types and tasks.
The leak detection task at Glostrup Forsyning
Like many other urban utilities, Glostrup Forsyning has worked systematically with acoustic leak detection for many years, primarily based on manual listening at stopcocks. The method worked, but was resource-intensive and only provided a snapshot of the condition of the pipeline network.
Early experiments with loggers and remote monitoring showed that the technology itself was not sufficient. The implementation was complex, the data quality was variable, and the results did not provide the desired overview. The challenge was therefore not just to install new technology, but to ensure continuous monitoring, correct interpretation of data and clear action in operations.
The solution for both acute leak detection and long-term monitoring
At the end of 2025, Glostrup Forsyning and Danish Water Innovation ApS (DWI) a collaboration to implement the latest generation of Gutermann ZONESCAN AI loggers combined with the surveillance system GUTERMANN CLOUD – and most importantly: a new collaboration model.
Instead of leaving data analysis and follow-up to the everyday operations, monitoring, professional assessment and action combined at DWI in ongoing collaboration with the utility. Loggers collect data every night which is analyzed in GUTERMANN CLOUD, and DWI monitors and evaluates data daily. Only relevant events are reported further.
When a potential leak is identified, it is reported to the operations manager at Glostrup Forsyning. After acceptance, DWI performs fine localization in the field, clearly marks the location of the leak and sends a short report with photo documentation and a clear basis for action.
The results and value creation
The collaboration model has given Glostrup Forsyning a significantly better overview of the condition of the pipeline network and a more targeted effort to combat water loss.
In practice this has meant:
- Early identification of leaks
- Less noise and fewer false alarms
- Better prioritization of resources in operations
- A solid basis for identifying stressed areas in the network
The ongoing monitoring has also shown patterns where repeated leaks occur in the same areas, indicating local stress rather than isolated failures. At the same time, the system has become better at handling background noise from other infrastructures, including district heating, over time.
Organizationally, the solution has made it possible to work with advanced monitoring without the need for internal data expertise, with a clear division of roles and a model that is easy to explain to management and board of directors.
“We don’t just raise an alarm – we provide an assessment.”
Claus Juel – Business Developer at DWI A / S
Is it interesting for other supplies?
The model from Glostrup is scalable and can be adapted to both small and medium-sized utilities. It does not require large internal resources and can be built up gradually – from defined zones to larger parts of the grid.
Conclusion on the operational benefits of the collaboration
The case from Glostrup Forsyning shows that permanent monitoring only creates real value when responsibility for monitoring, assessment and action is clearly placed.
The combination of modern loggers, daily monitoring by professionals and operational fine-tuning provides a robust and effective approach to reducing water loss.
DWI not only delivers alarms and data – but also professional assessment and operational decision-making basis.
For further details on the case and references contact Per Sørensen, DWI ApS at +45 5433 2447 or call our main number at +45 3172 3131
Tailor-made solutions for utilities, industry and private customers
No supply network is the same. That's why we always adapt our efforts to the specific task, regardless of whether it's emergency leak detection, systematic review of supply networks, or advice on future structure and monitoring.
Would you like a professional assessment of your situation – or discuss how leak detection can be part of your long-term strategy?
Contact us and speak to a specialist.
