Ensuring the safety of water systems in UK schools and universities is paramount for protecting the health and well-being of students, faculty, staff, and visitors. Legionella, a potentially deadly waterborne pathogen, can easily proliferate in the intricate plumbing systems commonly found in educational institutions. These systems span dormitories, gyms, cafeterias, labs, classrooms, and more. If not properly managed, Legionella poses a severe threat to public health.
Thankfully, with the right preventative measures and the expertise of experienced legionella contractors, academic institutions in the UK can effectively mitigate the risk of Legionella and ensure the integrity of their water systems.
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Where Does Legionella Originate in Schools and Universities?
Legionella bacteria naturally occur in freshwater environments but can multiply to dangerous levels in man-made water systems. The bacteria thrive in warm, stagnant water and can form resilient biofilms. Schools and universities present ideal conditions for growth in:
- Dormitory showers and bathrooms
- Water fountains
- Cooling towers
- Decorative fountains
- Pools and hot tubs
- Lab equipment lines
- Heating and cooling system pipes
Once established, Legionella colonies can spread via water droplets and mists, posing a risk to students and faculty when inhaled.
Legionella Statistics in the UK – An Ongoing Threat
Legionnaires’ disease has been an increasing public health concern in recent years. According to Public Health England (PHE), there were 448 confirmed cases of Legionnaires’ disease in England and Wales in 2015. This number rose to 530 cases in 2016, marking an 18% year-over-year increase.
In 2017, PHE reported 498 confirmed cases, and the number continued to rise with 545 cases confirmed in 2018. Although the COVID-19 pandemic complicated Legionella reporting in 2020, available PHE data shows 228 confirmed cases from January to October of that year, suggesting 2020 was on track to see another high annual caseload before the pandemic’s disruption.
The overall trend is evident – Legionnaires’ disease has become more prevalent. PHE attributes this to factors such as an aging population and increased testing. However, this underscores the imperative for building owners and managers to remain vigilant in controlling Legionella risks. Regular testing, disinfection, and proper maintenance of water systems are critical.
Preventing Legionella Growth in Dorm Showers and Bathrooms
Showers and bathrooms in student dormitories are high-risk areas for Legionella due to the combination of warm, stagnant water and frequent aerosolization from showering. The high occupancy of dorms further increases the risk of rapid spread if Legionella colonises the plumbing systems.
- Install Thermostatic Mixing Valves: These valves help control water temperature, ensuring it remains outside the optimal range for Legionella growth.
- Routinely Flush Showers: Regularly flushing showerheads and other outlets helps prevent water from becoming stagnant.
- Replace Old Fixtures: Upgrading outdated plumbing fixtures can reduce the likelihood of Legionella colonization.
- Supplemental Water Treatment: Implementing additional water treatment methods, such as UV treatment or chlorination, can provide an extra layer of protection.