Legionella and misting

Whether we are talking about misting, nebulization or atomization, the size of the droplets produced (less than 10 µm) makes each one of these systems a potential carrier of the disease. However, for there to be a significant risk, the misted water has to have been preserved in conditions favorable to the development of legionella:

- For a sufficient duration;

- In a temperature between 25 and 40°C;

- In a reservoir or pipeline containing biofilm.

There is then a risk of bacterial development if a misting system remains un-operated for a certain period and if the stagnant water is at a temperature favorable to the development of bacteria.

For example, misting lines frequently installed outdoors can be exposed to sun rays and one can easily imagine the temperature rising between 25 and 40°C for several hours. If the system is left un-operated for one month, this phenomenon will be reproduced every day (30 times) and the stagnant water in the tubes will be potentially polluted.

 

Although no case of legionnaire’s disease has been identified in a misting system until today, misting systems must be designed to reduce the risks to a minimum. Our company has always worked in this way and can offer today to its customers the best performing systems on the market thanks to its [DID Bio Protect] patented process.