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Legionella Risk Assessment

A Legionella Risk Assessment identifies and evaluates the risk of Legionella bacteria in a building's water system. Landlords are legally required to assess the risk and implement control measures. The assessment covers hot and cold water systems, storage tanks, showers, and any other water sources that could create aerosols.

Health and Safety at Work Act 1974, ACOP L8, HSG274Valid: Every 2 years (recommended)

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Sample LRA certificate

Sample Legionella Risk Assessment certificate created with CertBox, showing the professional PDF layout with water system survey and schematic, temperature monitoring (hot and cold), storage tank inspection

Sample LRA with fictional data. All personal details shown are fake.

What it covers

  • Water system survey and schematic
  • Temperature monitoring (hot and cold)
  • Storage tank inspection
  • Dead leg identification
  • Risk rating for each water outlet
  • Control measures and recommendations

Who needs a LRA?

Landlords
Employers
Commercial premises
Schools and care homes

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Frequently asked questions about LRA

Is a Legionella risk assessment mandatory for landlords?
Yes. Under the Health and Safety at Work Act 1974 and ACOP L8, landlords must assess the risk of Legionella in their rental properties. This applies to all landlords, not just those with large buildings.
How often should it be reviewed?
Industry best practice suggests reviewing the assessment every 2 years, or sooner if there are changes to the water system, the building use, or the occupants, though HSE guidance does not specify a fixed interval. Temperature checks should be carried out more frequently.

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