Legionella is a bacterium that can multiply in stagnant water — hot water systems, cooling towers, pools and showerheads — and cause Legionnaires’ disease. Facilities with complex water systems — hotels, hospitals, factories and malls — carry particular risk.
Risk factors
- Stagnant water between 20–45°C
- Rarely used or dead-leg pipework
- Inadequate disinfection
- Biofilm and sediment build-up
Management steps
Risk assessment, temperature and disinfection controls, regular sampling and record-keeping are the core steps. ISIS performs the risk assessment and lets you track the monitoring plan digitally with QOS.
Related service
Legionella-risicobeoordeling