Legionella Risk Assessments

Legionella Risk Assessments Bournemouth Poole Christchurch Ringwood New Milton Lymington Southampton

Legionella risk assessments are an important safety management process that will help to protect your work undertaking and others from harm. In the United Kingdom this type of specialist risk assessment is required by law and is specifically identified by the Health & Safety Executive in their Approved Code of Practice (ACOP) L8 “Legionnaires’ disease. The control of legionella bacteria in water systems”.

The UK’s Health & Safety Executive (HSE) in their Approved Code of Practice (ACOP) L8, “Legionnaires’ disease. The control of legionella bacteria in water systems” state that:

“A suitable and sufficient [risk] assessment must be carried out to identify and assess the risk of exposure to legionella bacteria from work activities and water systems on the premises and any precautionary measures needed …”

Paragraph 28. HSE ACOP L8.
We are specialists in high quality Legionella Risk Assessments of all water systems. Unlike many companies we provide a fully bespoke Legionella Risk Assessment and control program for your site.We pride ourselves on quality as a poor Legionella Risk Assessment can be worse than no risk assessment, leaving you vulnerable to prosecution.




The genus Legionella is a pathogenic group of Gram-negative bacteria that includes the species L. pneumophila, causing legionellosis[3] (all illnesses caused by Legionella) including a pneumonia-type illness called Legionnaires’ disease and a mild flu-like illness called Pontiac fever.[3]

Legionella may be visualized with a silver stain or cultured in cysteine-containing media such as buffered charcoal yeast extract agar. It is common in many environments, including soil and aquatic systems, with at least 50 species and 70 serogroups identified. The bacterium, however, is not transmissible from person to person:[4] furthermore, most people exposed to the bacteria do not become ill.[5]

The side chains of the cell wall carry the bases responsible for the somatic antigen specificity of these organisms. The chemical composition of these side chains both with respect to components and arrangement of the different sugars determines the nature of the somatic or O antigen determinants, which are essential means of serologically classifying many Gram-negative bacteria.

Legionella acquired its name after an outbreak of a then-unknown “mystery disease” sickened 221 persons, causing 34 deaths. The outbreak was first noticed among people attending a convention of the American Legion—an association of U.S. military veterans. The convention occurred in Philadelphiaduring the U.S. Bicentennial year in July 21–24, 1976. This epidemic among U.S. war veterans, occurring in the same city as—and within days of the 200th anniversary of—the signing of the Declaration of Independence, was widely publicized and caused great concern in the United States.[6]

On January 18, 1977, the causative agent was identified as a previously unknown bacterium subsequently named Legionella. See Legionnaires’ diseasefor full details.