Top tips to avoid problems with Legionnaires' disease include:
Only use a qualified plumber
Ensure suitable fittings are used (Reg 4 compliant)
Keep the design of plumbing systems simple
Design a system so water is regularly turned over and does not stagnate
Ensure hot and cold water are kept at the correct temperatures
Businesses should follow the advice within the HSE approved code of practice L8 to ensure they meet their legal duties under the Health and Safety at Work Act 1974 to manage risks from legionella bacteria.
In May 2020, Water UK published guidance to building owners, landlords and managers on recovering buildings and networks after prolonged inactivity during Covid-19 to avoid risks of adverse water quality and potential risks to health – including legionella bacteria.