Each answer carries a risk weight based on the conditions that drive waterborne pathogen and biofilm growth: who relies on the water, how much is stored and heated, whether temperatures are controlled, whether outlets sit idle, how recently the system was cleaned, and whether control is written down and owned. We add those weights into an indicative band. It is a guide to where your exposure sits, not a measurement of it.
This is an indicative self-check, not a statutory Legionella risk assessment, and it does not replace a competent on-site assessment of your systems. It reflects the risk factors set out in the HSE Approved Code of Practice L8 and HSG274. Your actual exposure, and what would reduce it, is confirmed per site.
Tell us your challenge
Tell us the cost, the risk or the obligation you are facing. A senior member of our team will respond, in confidence, with how we would help.










