Legionella is a bacterium found in water systems that can cause serious illnesses such as legionellosis when contaminated water is atomized and inhaled. The bacterium grows most rapidly at temperatures between approximately 20°C and 45°C, with an optimal growth range around 35°C. Temperatures below 20°C inhibit its growth, while temperatures above 60°C kill the bacterium. As a result, temperature control is one of the most important measures against Legionella growth in water systems.
An essential part of Legionella prevention is regularly measuring and recording water temperatures in hot and cold water systems. This requires specific Legionella thermometers that are durable, accurate, and easy to use, so that building managers, installers, and facility managers can demonstrate that the water system remains within safe temperature guidelines.
At Thermapen Netherlands, we offer a selection of professional water and Legionella thermometers designed for testing water temperatures in tap water, water heaters, water heating systems, and other drinking water installations. Our instruments help you monitor temperatures within critical temperature ranges, enabling you to effectively mitigate risks and comply with risk and control plans for Legionella prevention.
Why Legionella thermometers are important
Legionella can grow in stagnant or slowly flowing water that remains between 20°C and 45°C. By keeping hot water above approximately 60°C and cold water below approximately 20°C, the risk of bacterial growth is drastically reduced. Regular temperature checks using reliable thermometers are crucial to ensure that water systems meet these safety limits.
Applications
Our Legionella thermometers and thermometer kits are suitable for:
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Temperature measurements in boilers and hot water systems
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Inspection of cold-water systems where Legionella growth must be prevented
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Sewers, taps, and water pipes where temperature monitoring is important
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Facility management and Legionella prevention programs to ensure compliance with legal requirements and safety standards
Legionella thermometer kits often include multiple probes for different sampling methods (such as immersion, penetration, or surface probes), a carrying case, and a traceable calibration certificate to ensure the accuracy of measurements.
By performing consistent and accurate temperature measurements, you can mitigate Legionella risks, demonstrate that systems are operating safely, and contribute to healthy water management in buildings and facilities.
