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  • Lisamarie Lamb

How To Protect Residents From Legionella

Legionnaires' disease is a severe form of pneumonia caused by inhaling legionella bacteria, often found in water systems. While relatively rare, outbreaks can have devastating consequences. In the UK, ensuring the safety of residents against legionnaires' disease is paramount. Here are some key steps to protect residents from this potentially deadly illness.




  1. Regular Risk Assessments: Conducting thorough risk assessments of water systems is the first line of defense. Identify and assess potential sources of legionella growth, such as cooling towers, hot water tanks, and air conditioning systems.

  2. Maintain Water Temperature: Legionella bacteria thrive in lukewarm water. Maintaining hot water temperatures above 60°C and cold water temperatures below 20°C helps prevent bacterial growth. Regularly flush out stagnant water in seldom-used outlets to discourage bacterial colonization.

  3. Implement Water Treatment Measures: Employ water treatment methods such as chlorination or copper-silver ionization to control legionella growth. Regularly monitor and maintain appropriate levels of disinfectants in water systems.

  4. Clean and Disinfect Water Systems: Regularly clean and disinfect water storage tanks, pipes, and other components of water systems to prevent biofilm formation, which can harbour legionella bacteria.

  5. Educate Residents and Staff: Raise awareness about legionnaires' disease and the importance of water hygiene practices among residents, staff, and maintenance personnel. Encourage reporting of any symptoms or concerns related to water quality.

  6. Implement Monitoring Protocols: Establish monitoring protocols to regularly check water quality and temperature in high-risk areas. Promptly address any deviations from recommended standards.

  7. Ensure Proper Ventilation: Proper ventilation reduces the risk of aerosolization of water droplets containing legionella bacteria. Maintain good airflow and ventilation in enclosed spaces where water systems are present.

  8. Stay Compliant with Regulations: Familiarize yourself with relevant legislation and guidelines, such as the Health and Safety Executive's Approved Code of Practice (ACOP) L8, and ensure compliance with regulatory requirements.

  9. Regular Training and Review: Provide regular training for staff involved in maintaining water systems. Conduct periodic reviews of risk assessments and control measures to ensure effectiveness and make necessary adjustments.

By taking proactive measures to identify and mitigate risks associated with legionnaires' disease, property owners and managers can help protect residents' health and well-being. Vigilance, proper maintenance, and adherence to guidelines are essential in preventing outbreaks and ensuring a safe living environment for all.

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