We specialise in managing positive Legionella test results with efficiency and expertise. Our commitment to exceptional Legionella prevention services includes industry-standard remedial works, comprehensive Legionnaires’ risk assessments, and nationwide coverage across the UK.
Legionella bacteria are naturally present in various water sources. However, their presence in man-made water systems is particularly concerning. While low bacterial levels might not necessitate immediate action, higher concentrations pose significant health risks and require prompt intervention. Our team is dedicated to identifying and addressing Legionella detections swiftly, ensuring the safety of your water systems and the well-being of all users.
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The Consequences of Legionella Contamination
The presence of Legionella in water systems can lead to severe health risks, particularly when bacterial levels are high. We efficiently detect and manage Legionella contamination, safeguarding both your water systems and the individuals who rely on them
Importance of Regular Water Testing
Regular sampling and testing for Legionella, although not always legally required, are prudent measures to ensure water safety. Partnering with a UKAS-accredited laboratory, we confirm the effectiveness of water safety plans and control measures against Legionella contamination. Our rigorous testing protocols are designed to maintain the highest standards of safety and compliance.
Identifying Types of Legionella Bacteria
Laboratories can detect three broad groups of Legionella bacteria in water samples. Legionella pneumophila serogroup 1 is the most dangerous, often linked to Legionnaires’ disease. Serogroups 2-14, while less harmful, can still cause illness. Our team uses advanced testing methods to accurately identify these bacterial groups, enabling us to implement appropriate and effective safety measures.
Understanding Legionella Detection Levels
Legionella bacteria levels are reported in colony-forming units per liter (cfu/l). According to the Health and Safety Executive’s guidelines, different levels of detection warrant specific actions:
- Below 100 cfu/l: Levels under 100 cfu/l are generally considered safe, but further investigation is required in healthcare settings due to patient vulnerability.
- 100-1000 cfu/l: Indicates low-level contamination. If only a few samples are positive, we resample and review control measures. If many samples are positive, immediate action and disinfection are required.
- Above 1000 cfu/l: High contamination levels necessitate urgent remedial actions to prevent outbreaks of Legionnaires’ disease. This involves resampling, disinfection, and ongoing monitoring to ensure effective control.
Responding to High Legionella Concentrations
When high levels of Legionella are detected, we provide tailored remedial services to meet specific needs. Our qualified engineers perform expert water tank cleaning, thorough chlorination procedures, and comprehensive water system assessments.
Key actions include system redesign, removing redundant pipes, eliminating limescale buildup, servicing mixing valves, and installing pipework insulation. These measures not only address Legionella bacteria but also enhance overall water system efficiency and safety.