63% reduction in water use that triggered an investigation
III Milenium improved water performance across its office building so significantly that it triggered an investigation from the water supplier.
201 leaks
201 leaks
detected during the analysed period
1 investigation
1 investigation
conducted by the local water utility following the sharp drop in usage
769,056 litres
769,056 litres
of potential annual water savings
Project overview
III Milenium aimed to transform one of its multi-storey commercial office buildings in Łódź into a more self-sufficient and intelligently managed asset. The goal was not only to reduce costs, but to create a building capable of monitoring its own water infrastructure and responding to irregularities in real time.
Watergate was deployed across 18 monitoring points, enabling continuous visibility across both cold and hot water systems. Within the first three months, we detected more than 200 leak events, including hidden and long-duration flows that had previously gone unnoticed.
Tangible impact
Within a single quarter, III Milenium moved from limited visibility to active control over its water infrastructure. Previously unnoticed irregularities were identified and addressed before escalating into larger issues.
This translated into measurable reductions in water use, avoided CO2 emissions, lower operating costs, and a materially lower risk of asset damage.
Early-stage risk detection
From the moment of installation, 27% of Watergate devices recorded uncontrolled flows, highlighting hidden problems within the plumbing installation.
201 potential leaks
In the first quarter, we detected 201 potential leaks, ranging from small, progressive leaks with escalation risk to non-destructive faults such as leaking toilets.
Preventable waste
During the impact assessment phase, we identified 14,500 litres that could have been prevented under full Watergate protection.
Hidden dangers
Over the analysed period, our system identified more than 333,000 recurring micro-flow events, mainly associated with leaking appliances, fixtures and fittings.
Measurable impact on costs and carbon footprint
Rapid detection and early intervention allowed III Milenium to address a significant number of irregular flow events, reducing water losses by 194,264 litres within a single quarter and avoiding approximately 2,109 kg of CO2 emissions.
When comparing two equivalent three-month billing periods, average daily consumption fell from 6.15 m³ to 2.25 m³, representing a reduction of around 63%, or nearly 4,000 litres saved per day.
Rapid issue resolution through live monitoring
Real-time access to the Watergate dashboard enabled the team to identify and resolve irregular flow events quickly, significantly limiting water loss and reducing environmental impact.
Structured alerting and escalation
The alert system combined in-app push notifications, dashboard warnings, and automated robo-calls, ensuring that critical events were escalated progressively and addressed without delay.
Autonomous infrastructure protection
With automatic shut-off enabled across all devices, high-flow and long-duration events could be stopped immediately, protecting the building even outside working hours and reducing reliance on manual oversight.
The drop in consumption was significant enough to trigger an investigation.
After Watergate was deployed, the building’s water consumption dropped so sharply that the local water supplier sent two inspectors to investigate. They suspected the meter had been bypassed.
To test this, they shut off the water supply at street level and went through the building opening taps to check whether water was still flowing. It wasn’t.
The reduction was genuine – driven by improved monitoring, early leak identification, and tighter control of the building’s water infrastructure.
Building on proven results
After validating Watergate’s impact in its Łódź office building, III Milenium is preparing to expand the system across further properties within its portfolio.
The project has created a practical framework for ongoing infrastructure control – improving resilience, limiting operational risk, and supporting long-term water efficiency.
“For years, we were convinced that our water consumption was under control. When we were confronted with a leak at one of our sites, we saw first-hand how costly and difficult the consequences of flooding can be.
Today, thanks to Watergate, we feel genuinely protected against a repeat of that scenario. At the same time, we identified and eliminated small, hidden leaks we previously had no idea existed. Only detailed monitoring revealed how much water was literally disappearing into the drains, unnoticed and without our knowledge.
This experience completely changed our approach to property management. The building is now actively protected against leaks, even outside working hours, and we can respond immediately before a problem escalates. That gives us a real sense of security and control.
The scale of the savings has been significant, and the results have motivated us to go even further. We want to educate our tenants and work together to build a more responsible approach to water use. Knowing that our infrastructure is protected, we can focus on identifying additional areas for improvement and continuously increasing the overall efficiency of the property.”
– Dagmara Wysoczyńska
Administrative and Technical Director at III Milenium
Ready to take control?
This case demonstrates how structured monitoring and automated response can materially improve water performance in commercial assets.
If you are reviewing water risk, operational efficiency, or ESG targets across your portfolio, we would be happy to discuss how this model could be applied to your buildings.