Legionnaires Disease is caused by Legionella bacteria, which live and breed in temperate, standing water and are then transmitted through airborne particles. Any premises that has been closed down for two or more weeks may have unintentionally been breeding this potentially fatal disease. Water systems, condensers, coolers, A/C units and tanks which have reached temperatures of 20-45 degrees C, may now harbour the bacteria – and no-one wants to face a new biological enemy in the wake of a global pandemic!
Ideally, water systems will have been flushed out, chemically treated and properly closed down before lockdown, but many businesses will not have considered this risk before they locked their doors. If that includes your business – you are not alone. The HSE has issued guidance about what to do in this situation. Follow their guidance and risk assessment here . And if necessary, call on the services of a local expert to ensure your water system is risk free before you open up to staff or customers.