Why water sampling and lab analyses are not enough for preventing Legionella and other pathogens

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Even when it is not directly formed by pathogens, the bacterial layer (biofilm) that forms on any surface in contact with a liquid represents the ideal environment for the survival and growth of dangerous microorganisms, such as Legionella pneumophila. In order to prevent such potentially harmful contamination, it is strictly needed to keep biofilm growth under control, applying cleaning/sanitation treatments as soon as bacteria start to colonize surfaces in contact with the liquid.

Sampling and analyzing water is useless for what concerns biofilm monitoring and, thus, it does not allow an effective prevention of pathogens: after the settlement of the first free-floating bacteria coming from the water bulk, biofilm dynamics is almost completely unrelated to the presence/number of bacteria in the water, since the settled ones will grow exponentially, duplicating themselves

Read more: http://www.alvimcleantech.com/go/legionella_monitoring_prevention

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