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Case Story

Innovative Legionella Prevention in UK Fire Stations: Successful Collaboration between Aguardio and EcoProd (UK)

Aguardio Hygiene Sensors provide an innovative solution for monitoring Legionella disease in several UK Fire & Rescue Stations. This system offers remote access to data, eliminating the need for travel, saving time, and reducing overhead costs


Several Fire & Rescue Stations partnered with Aguardio and EcoProd (Aguardio’s distributor in the UK) to pioneer a cost effective and innovative solution to monitor the bacteria in the fire stations that can cause Legionnaire’s disease, a rare form of pneumonia, and put firefighter’s health at risk. In March 2024, during a business meeting, EcoProd’s team met with representatives from Fire & Rescue Services to understand their water usage and management requirements. The client quickly recognized the superiority of EcoProd’s product portfolio for water management products, which sparked immediate discussions regarding client’s aspiration for enhanced understanding of building operations through remote control and cost-effective solutions. As a starting point, the Aguardio Hygiene Sensor was selected for installation at the trial site. This decision was influenced by its temperature measurement feature, which was deemed particularly useful in monitoring water systems for potential issues, such as Legionella bacteria


Ensuring compliance with Legionnaire’s disease prevention regulations in UK fire stations is a legal requirement. This typically involves following a strict procedure, costing the before Fire Service & Rescue Stations approximately £40,000 annually. The procedure includes monthly inspections by an inspector at each station to conduct tests aimed at monitoring legionella bacteria growth in the pipes.

Process & Results

The process of gathering data from Aguardio’s Sensors started as well as analysis of the data on Aguardios online platform Aguardio Hub was initiated to see if the devices were proving the right data in order to efficiently comply with Legionella monitoring as well as provide insights into the usage patterns of the building. Throughout the testing phase, several discussions took place, and thorough tests were conducted to validate the accuracy of Aguardio’s sensor data, crucial for designing an optimal solution.

The process resulted in Aguardio’s sensors, strategically placed on hot or cold taps, demonstrated their capability to provide precise temperature readings (temperature stamps) after 60 seconds of water flow – one stamp for cold water and two stamps for hot water. These temperature reading were integrated into Aguardio’s online platform, Aguardio Hub, enabling fire station manager search for specific fire stations, sensors and their status with either green light indication for water outlets that “passed” the test successfully and red light indication, meaning that a new test needs to be performed.


per year saved on maintenance

Precise data

eradicated the possibility of human error in data recording

Improved water safety

Alerts to prompt action for ensuring optimal water safety

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Aguardio Hygiene Sensor or
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Case Story

Detect toilet leaks in Housing Complexes

Aguardio leak sensors to save a minimum 30 million litres of water, equivalent to savings of EUR 270,000 (or DKK 2 million annually)*, for residents of Denmark’s fourth-largest housing company

*Based on achieving the minimum project target. Actual savings are likely to be significantly higher.

Sjælland Housing Case Study


Boligselskabet Sjælland, Denmark’s 4th largest housing company, partnered with Aguardio to tackle water waste from running toilets. The housing company ordered 12,000 Aguardio sensors to be deployed in stages, with each stage’s insights informing the next. The first 660 sensors yielded positive results, leading to the deployment of another 3,000 sensors with plans for the next rollout already underway. The housing company estimates that achieving the project’s minimum target of detecting 4% leaking toilets will save the residents of its 12,000 apartments around EUR 270,000 or DKK 2 million annually. However, savings are likely to be much higher since typically 10-20% of toilets are found to be leaking in housing complexes.


Running toilets are a significant problem for Boligselskabet Sjælland, causing water waste and expensive bills for residents. The case of a tenant who received a recalculation of 9,400 EUR due to a running toilet prompted Ulrik Eggert Knuth-Winterfeldt, Team Leader for Sustainability and Energy, to contact Aguardio and seek a solution because he could not find products on the market that could prevent such cases.


Aguardio’s Leak Sensors have proven highly effective in detecting running toilets and assisting residents in conserving water and reducing their water bills. Based on the successful outcome achieved through the installation of 3660 sensors, the rest of the 12,000 sensors are set to be deployed in subsequent stages, paving the way for widespread water conservation efforts.

Estimated Impact

If 4% of 12,000 Toilets were Found to be Leaking

(Min Project Target)


or DKK 2 Million savings per year


30 Million Litres

of clean water savings per year

Estimated Impact - if 10% of 12,000 Toilets Found to be Leaking

(Most Likely)


or DKK 5 Million savings per year


75 Million Litres

of clean water savings per year

Estimated Impact - if 20% of 12,000 Toilets Found to be Leaking

(Based on US Toilet Data)


or DKK 10 Million savings per year


150 Million Litres

of clean water savings per year

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Case Story

Save on Water and energy in Housing Complexes

Aguardio’s solutions result in a reduction of 1/3 in  water consumption in bathrooms via 33% reduction in shower time and detection of 17.3% of toilets that were leaking for residents of Jelling Boligselskab (part of DOMEA) in Denmark


Jelling Boligselskab housing association (part of DOMEA)  in Denmark, has been nominated for the Vejle Climate Prize for their outstanding contribution towards reducing energy and water consumption. The housing association decided to optimize energy usage and take care of the environment. One of the measures taken by Jelling Boligselskab is the installation of Aguardio sensors in the shower cubicles and toilets. This initiative has helped residents track their shower water usage, and leak sensors in the toilets have helped property staff identify leaking toilets. According to The Danish Ministry of Energy, a single toilet leak can waste up to 275 litres of water per day, and such leaks often go unnoticed since they are not visible or audible.


Water conservation is a crucial aspect of environmental sustainability, and yet it is often overlooked. People are often unaware of how much water they use, and these housing residents were no different. The challenge was to make them aware of their water consumption and encourage them to conserve water.


The initiative has been successful in raising awareness about water conservation among housing association’s residents. The time spent in the shower has reduced by almost a third, and the residents have become more conscious of their water usage. The facility managers estimate that water consumption from bathrooms & toilets is reduced by 1/3.

Within the first 9 months, the leak sensors have helped detect 17.3% of the toilets that were leaking, which has prevented water wastage. Payback from this project is estimated to be around 4-5 months, and this story is an excellent example of how small measures can have a significant impact on the environment.


reduction in shower duration*


toilets found to be leaking


of bathrooms expected to be saved from mould-related renovations, each costing €800-2000, per year

Nominated as Finalist for Vejle Climate Prize

*Results are consistent with scientifically validated findings for the Aguardio Shower Sensor solution (see Showering Smartly) and with the 20% toilet leakage rate reported for US-manufactured toilets

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Case Story

Showering Smartly in Student Accomodations

Aguardio’s Shower Sensor motivates University of Surrey students to cut shower time by 33%

Jason Hawkes/University of Surrey


Concerned about the high water and energy consumption in student accommodations due to prolonged showering, a behavioural intervention using Aguardio’s shower sensor and persuasive messaging was conducted at University of Surrey. The study aimed to explore the effectiveness of the intervention in encouraging pro-environmental shower behaviour among students over a period of 5 months.


Students spend more time showering than other age groups (often on average between 9-12 minutes), which contributes to increased water and energy consumption in student accommodations.

Moreover, traditional methods of encouraging behaviour change, such as signs or posters, may not be effective in the long term.


Aguardio’s shower sensors combined with pro-environment messaging reduced students’ average showering time by 33% or by approximately 3 minutes, demonstrating the effectiveness of using Aguardio’s shower technology and persuasive messaging in encouraging pro-environmental shower behaviour among students.

By implementing Aguardio’s shower sensor, student accommodations can reduce their water and energy consumption and contribute to pro-environmental behaviour among their residents.




reduction in shower duration with Aguardio + pro-environment messaging in bathrooms, where Aguardio was installed

Estimated Impact:

Assumptions: District heating: 458 gCO2e/litre, Oil burner: 789 gCO2e/litre, Gas: 183 gCO2e/litre, and Power: 450 gCO2e/litre

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Case Story

Showering Smartly in Tourism Accomodations

Aguardio’s innovative Shower Sensor and persuasive messages reduce hotel guests’ shower time by 21% across multiple countries

Showering Smartly in Tourism Accomodations Case Study


This academic case study involved a behavioural intervention that was implemented in six tourism accommodations across Denmark, Spain, the UK, and the US. The goal of the intervention was to reduce shower duration among guests in order to achieve water and energy savings and reduce the carbon footprint of the accommodations.


Tourism accommodations are significant contributors to water and energy consumption, and showering is one of the primary drivers of this consumption. Showers are highly hot water-intensive behaviours, increasing energy use and carbon emissions. As such, fostering pro-environmental shower behaviour can contribute to tourism businesses’ environmental, social, and corporate governance. However, traditional methods of encouraging behaviour change (such as posters or signs) may not be effective and behavioural interventions are hardly applied in tourism.


Aguardio’s hospitality solution, real-time information from Aguardio’s shower sensor along with nudging pro-environmental text, reduced guests’ shower duration by 21.27% compared to the control.

These results make the intervention one of the most successful interventions in shower behaviour in any setting. The success of this intervention demonstrates the potential for tourism businesses to implement similar interventions to achieve water and energy savings, reduce their carbon footprint, and contribute to pro-environmental behaviour.


reduction in shower duration with Aguardio interactive sensors & data + pro-environment messaging



4.44 m3 or 4440 litres

of water savings per room/year

0.19 MWh of energy + 33 Kg of CO2

savings per room/year

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