A Legionella Risk Assessment is a controlled review of a water supply in order to prevent water contamination, which in result can lead to the deadly condition Legionnaires’ Disease.
Building owners and/or managers are responsible for identifying potential risks to water systems, which can include contamination from legionella bacteria amongst other things.
Duties under the Health and Safety at Work etc. Act 1974 (HSWA) extend to risks from legionella bacteria, which may arise from work activities. The Approved Code of Practice: Legionnaires’ disease: The control of Legionella bacteria in water systems (L8)