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How IoT Temperature Monitoring Can Help with Legionella Prevention

iot temperature monitoring legionella
How IoT Temperature Monitoring Can Help with Legionella Prevention

Legionella bacteria is a serious concern for building owners and operators as it can cause Legionnaires' disease, a potentially fatal form of pneumonia. One of the key factors for the growth of Legionella bacteria is the temperature of water systems.

Traditional methods of temperature monitoring can be labour-intensive and prone to human error, which is where IoT technology comes in. In this article, we'll discuss how IoT temperature monitoring can help with Legionella prevention, its benefits, and methods of monitoring.

Contents table:

Let's explore some of the key areas below…

How do you check water temperature for Legionella?

To check the water temperature for Legionella, you need to measure it at the point of use, which means at the outlet of the hot water system. This temperature should be above 60°C, and the cold water temperature should be below 20°C. It is essential to test the temperature at least once a week to ensure that it remains within this range.

How often should temperature checks be carried out?

Temperature checks should be carried out at least once a week, and records should be kept of the results. This will help to ensure that the water system is being maintained at the appropriate temperature.

Is temperature control of the water one strategy for reducing the risk of Legionella?

Yes, temperature control is one strategy for reducing the risk of Legionella. By maintaining hot water temperatures above 60°C and cold water temperatures below 20°C, the growth of Legionella bacteria can be prevented.

What is the purpose of temperature monitoring?

The purpose of temperature monitoring is to ensure that water temperatures remain within the recommended range consistently. Temperature monitoring can help identify potential issues before they become problems, and take corrective action.

What is water temperature monitoring?

Water temperature monitoring is the process of measuring water temperatures and keeping records to ensure that the temperatures remain within the recommended range. With IoT technology, water temperature monitoring can be done remotely and in real-time, allowing for quick and accurate identification of issues.

What are the benefits of temperature control?

The benefits of temperature control include the prevention of Legionella growth, reduction of the risk of Legionnaires' disease, and the protection of building occupants' health and safety. With IoT temperature monitoring, the temperature control process can be made more efficient, reliable, and cost-effective.

What are the methods of temperature monitoring?

There are several methods of temperature monitoring, including manual measurement, electronic data loggers, and IoT temperature monitoring systems. Manual measurement involves using a thermometer to measure water temperatures, while electronic data loggers record temperatures at set intervals. IoT temperature monitoring systems are the most advanced and efficient method, providing real-time data and alerts in case of temperature fluctuations.


Legionella prevention is essential to ensure the safety and health of building occupants. By using IoT technology, temperature monitoring can be made more efficient, reliable, and cost-effective, ultimately reducing the risk of Legionella growth and Legionnaires' disease.

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