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Legionella Testing

Legionella is a type of bacterium found naturally in freshwater environments such as lakes and streams.  Legionella can become a health concern when it grows and spreads within both potable and non-potable water systems in buildings. It is notable for its ability to resist low levels of chlorination and thrive in hot water environments.  Legionella is a danger when water containing high concentrations of the bacterium are inhaled and it enters the lungs.  One example of this would be showering and breathing in the aerosolized water droplets.   Legionella is of special concern inside of healthcare facilities in which high risk groups such as the elderly or immunocompromised  patients may be housed.  The CDC now requires that healthcare facilities develop a water management plan to address this potential issue and has developed an online toolkit to assist with the task.  Following is a link to the CDC webpage containing the toolkit information:


Access Analytical utilizes the IDEXX Legiolert culture method to rapidly detect Legionella pneumophila  in both potable and non-potable water samples from sources such as well as hot water heaters, cooling towers, condensers, spas, decorative fountains, etc..  Our laboratory customer service staff will assist you with the entire Legionella testing process which includes sampling bottles shipped to the location of your choice. 

Access Analytical performs annual Proficiency Testing (PT) in order to ensure that we have the ability to accurately culture Legionella pneumophila in our laboratory.  Results from our most recent round of PT sample analysis is included here as a reference:

Legionella 2018 PT Results (40 KB)