Legionella laboratory analysis: accurately detect and quantify Legionella spp
The presence of Legionella in water systems poses a major health risk, particularly in industrial facilities , public buildings (hospitals, hotels, spas), and water cooling systems . These bacteria, naturally present in aquatic environments, can proliferate in hot water circuits, cooling towers, and other poorly maintained installations. When inhaled as aerosols, they can cause Legionnaires' disease , a potentially serious lung infection.
Laboratory testing for Legionella is therefore essential to identify contamination and implement corrective actions to prevent health risks . Regular monitoring of the microbiological quality of water allows for the early detection of bacterial growth and ensures compliance with current regulations.
Legionella analysis methods: culture and PCR
YesWeLab offers analyses compliant with ISO 11731 , the regulatory standard for the detection and quantification of Legionella spp. and Legionella pneumophila . Our laboratories employ several analytical techniques to guarantee accurate and rapidly usable results:
- ISO 11731 culture method : reference technique for the isolation and enumeration of viable Legionella bacteria on specific media (GVPC, BCYE). This method remains the most reliable for confirming the presence and concentration of Legionella spp. in a water system.
- PCR (Polymerase Chain Reaction) analysis : this molecular technique allows for the Legionella spp.- specific genes early detection and immediate response in cases of suspected contamination.
Combining these two methods provides a complete analysis: PCR offers a rapid response, while culture confirms the viability of the bacteria and their ability to multiply.
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Applications and sectors concerned
Applications and sectors concerned
Legionella testing is relevant to sectors where the microbiological quality of water is critical. Current regulations mandate regular testing to ensure user safety and prevent outbreaks.
- Monitoring of drinking and sanitary water networks : inspection of domestic hot water circuits, cooling towers, hospital networks, and public buildings. Legionella thrives particularly in installations where the water temperature is between 25°C and 45°C, requiring enhanced monitoring.
- Industry and cooling : monitoring of industrial water, cooling circuits and thermal installations to limit bacterial proliferation and prevent contamination of workers and residents.
- Environment and risk management : prevention of contamination in wastewater treatment plants, retention basins, public fountains and other infrastructure where stagnant water promotes the development of legionella.
Why choose YesWeLab for your legionella testing?
With YesWeLab , you benefit from a network of accredited laboratories specializing in Legionella testing, guaranteeing reliable results that comply with regulatory requirements . We support our clients in implementing a monitoring strategy tailored to their facilities and current regulations .
Our services include:
- Analyses in accordance with current standards (ISO 11731, ICPE regulations, health control of ERPs, ANSES recommendations).
- Detailed analysis reports with an interpretation of the results and recommendations for corrective actions where necessary.
- A digital solution for simplified sample management, real-time monitoring of results and complete traceability of analyses performed.
- Technical support to help you define a control plan tailored to your needs and to meet the requirements of health authorities.
Order your Legionella analysis today and ensure the compliance of your facilities with YesWeLab.
Léa Géréec
Technical and scientific advisor
