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The objective of the conventional water treatment performed in the
condensation water is to avoid corrosion and scale in the equipment and
to avoid that the proliferation of microorganisms caused any harm to the
operation of the system. The residual of the biocide product applied not
always will avoid the proliferation and dispersion of
Legionella
.
Air humidification systems, indoor water mist fans, or any other
methods to release water steam indoors in order to condition, refresh, treat
or improve the quality of indoor air must be verified in terms of the risk of
contamination of the bacteria that spray water in the environment.
Therefore, we can note that the air conditioning system, when properly
cared and maintained, is not to be an ecological niche for the
Legionella
bacteria in terms of indoor air-conditioned environments. The biggest
concern lies in the cooling towers or humidifiers. In these cases, the legal
technician in charge for the conditioning air system, once having the
technical knowledge on the subject, or a qualified professional, is to perform
a risk assessment at the place and keep in practice a prevention schedule
with periodic laboratorial tests.
