A Legionella risk assessment the first step in Legionella control on a site and is exactly that – an assessment of the Legionella risks associated with a water system. It is an important part of water treatment practise as many legionella outbreaks have been the result of poor water system management. A risk assessment also outlines protocol which should reduce said risks. Having a risk assessment also helps firms ensure that they are compliant with ACoP L8 standards.
A risk assessment should include the following:
- The Inspection of all tanks to ensure they are compliant with all relevant legislation
- The Inspection of water heaters and calorifiers to ensure they comply with all relevant legislation
- The Inspection of water distribution systems to ensure they comply with all relevant legislation
- Temperatures to be taken from around the site to ensure they are not at a level to promote the growth of bacteria
- The production of an Asset register
- Digital photographs of the main pieces of the plants water system
- Schematics of all main pieces of a plant’s system
- A Responsibility Structure so that all involved know the level of responsibility they have for the up keep and maintenance of the water system including chemical treatment
- Recommendations that include the remedial work that is required to bring the system within the guidelines as set out in the ACOP L8 document
- Process waters can be included if requested
- A Log Book should be produced for regular monitoring and as a record.
The above would produce recommendations for a site that would ensure they comply with all relevant legislation including the Approved Code of Practice L8 & the Water Supply Regulations.