Legionella Checks

Updated: over a week ago

Legionella Checks

Risk Factors

1. Has water been stored between 20°C and 50°C?


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2. Has water been left without routine flushing, or poor or no flow in the water system for longer than a week?


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3. Are there any outlets that create inhalable droplets such as aerosols?


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4. Are there any dead legs of pipework that could hold stagnant water including hose pipes?


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Restarting The System

1. Has the temperature of hot water systems been increased to above 60°C, drawing it through to all hot water outlets if possible?


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2. Hot/cold water systems flushed through with fresh mains water for several minutes?


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3. Has it been ensured that the system is capable of delivering water at safe temperatures by checking temperatures ahead of reopening?


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4. Chemical or thermal disinfection of the water system undertaken?


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5. Microbiological sampling for Legionella bacteria undertaken?


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Checklist by GoAudits.com – Please note that this checklist is intended as an example. We do not guarantee compliance with the laws applicable to your territory or industry. You should seek professional advice to determine how this checklist should be adapted to your workplace or jurisdiction.

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