Legionella Treatment

The treatment of water in order to eliminate waterborne pathogens, including legionella, is wrought with challenges. For example, when legionella and other pathogens are suspended in water, they can be eliminated easily through the use of disinfectants. However, in addition to their presence in free-flowing water, both pathogenic and non-pathogenic bacteria form biofilms on the interior walls of tanks, pipes and other water distribution equipment. Common disinfectants have had only limited success in eliminating biofilms when used on their own. Some of the disinfectants used include:

In short, no one method has been completely effective when used on its own. However, facilities can increase the effectiveness of pathogen elimination by using a combination of techniques. Unless a facility addresses the deposits in pipes and low flow in “dead legs” present in all facility distribution systems, water-borne bacteria such as legionella are thriving and simply wait for a disruption of the biofilm or scale to break loose and spread.

Many municipalities and facilities are turning a Clearitas treatment program to eliminate the damaging and unhealthy effects of films, deposits and residues within their water systems. When used in conjunction with a primary disinfectant, Clearitas effectively penetrates and removes the protective layers of organic matter and deposits used by biofilm to protect their microbial inhabitants. Clearitas works by attacking the “organic glue” that holds biofilm together and its adherence to surfaces. Clearitas enables primary disinfectants greater access to the microbes they kill thereby improving their effectiveness and ability to deliver water that is safer. cleaner. better.®