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Legionella FAQ'S - Titan Mechanical Services






As proud members of the Legionella Control Association, Titan possess all the technical knowledge when it comes to this, gram-negative bacteria. Within neglected and poorly maintained water systems, the risk of prospective users contracting legionaires disease is highly likely as the conditions are ideally suited for microorganism development. At Titan Mechanical Services, we offer a comprehensive set of legionella remedial works that provide the necessary preventative measures against legionellosis outbreaks. We serve some of the United Kingdom's leading facilities management and blue-chip companies, keeping compliance and safety at the forefront of our operations.





Can Anyone Complete a Legionella Risk Assessment?


Although ill-advised if your site is significantly larger than most, any manager, owner or landlord of a premises can undertake a legionella risk assessment themselves. However, a professional risk assessor should be sourced if you lack competency and previous experience, ensuring all recorded findings are both relevant and accurate.



How Do You Test for Legionella in Water?


Conducting a test for legionella in water must be performed by a UKAS-accredited laboratory, as stated by the Health and Safety Executive (HSE). Samples must be sent through a sterile water bottle or a swab, through an appointed person visiting the site. Within these testing facilities, the sample will be investigated through either a PCR method process, the use of fluorescence microscopy or a culture test method.


What Causes Legionella in Water?


  • The ageing of stagnant water in a systems pipework or storage element

  • Biofilm protecting waterborne bacteria from disinfectants or heat

  • Lukewarm temperatures

  • Insufficient or irregular disinfectant procedures

  • Corroded water systems

  • Dead Leg Piping


What Temp Does Legionella Grow?


The ideal temperature range for legionella bacteria development occurs between 77°F-113°F / 25℃-45℃


Can Legionella Kill You?


Yes, in some instances cases of legionaires disease can result in death. Those with weakened immune systems are naturally more suspectable to severe, pneumonia-like symptoms which can be fatal. Roughly 10% of cases are deadly for those who're infected.


Can Legionella Be Spread from Person to Person?


No, legionaires disease is contracted through the inhalation of contaminated water in aerosol form. It cannot be spread through contact with a positive individual.


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