Preventing Legionella with Water temperature Control

The risk of Legionella is managed through a combination of measures including water temperature control. By implementing appropriate temperature control measures, it is possible to prevent the growth and spread of Legionella in water systems. The ideal temperature range for the growth of Legionella is between 20 and 45 degrees C. Therefore, one of most effective control measures in preventing Legionella, is to ensure that the water system is kept outside this temperature range.

The following are some temperature control measures that can be implemented to prevent the growth of Legionella in water systems. In hot water systems, the water should be stored at a minimum temperature of 60 degrees C and distributed to a minimum temperature of 50 degrees C. These temperatures are high enough to kill off any Legionella bacteria that may be present in the water. In cold water systems, the water should be stored and distributed a temperatures below 20 degrees C. If the water temperature is allowed to rise above this range, it could provide an ideal environment for the Legionella bacteria to grow.

To ensure that the water temperature control measures are effective, regular monitoring and testing should be carried out. This includes measuring the temperature of the water at various points in the system, as well as regularly testing for the presence of Legionella bacteria. Water storage tanks and pipe should be properly insulated and protected to maintain the desired water temperature. This is especially important for hot water systems where heat loss can occur if the storage tanks or pipes are not properly insulated.

And finally, regular flushing and cleaning of water systems can prevent the build up of sediment and biofilm, which can provide a suitable environment for the growth of Legionella.

By implementing these temperature control measures, the risk of Legionella in water systems can be significantly reduced. It is essential to ensure that the measures are carried out only by competent personnel who have the appropriate training and experience in Legionella prevention. Failure to implement appropriate temperature control measures can lead to the growth and spread of Legionella and potentially leading to serious illness, or even death.