As many of the UK’s businesses consider reopening their doors, the Water Regulations Advisory Scheme (WRAS) has encouraged business and property owners to consider the risks posed by their water systems sooner rather than later.
Many water systems may have been left stagnant and this could have resulted in warming of water in internal plumbing systems, growth of micro-organisms or increased uptake of plumbing metals, WRAS said.
Stagnant water can encourage the growth of micro-organisms, including Legionella, and unless steps are taken before a building is reoccupied, there is a risk of adverse water quality and potential risks to health.
WRAS is therefore encouraging all those responsible for building and facilities management to follow the guidance from Water UK, the trade association which represents the country’s water companies.
Where buildings have been unoccupied for less than 30 days or where steps have been taken to prevent microbiological growth, the guidance advises that property owners:
For larger buildings, those with tanks, showers, calorifiers and more complex pipework, Water UK said that the expectation is likely to be for more extensive flushing followed by cleaning and disinfection. Buildings with a complex plumbing system should ensure they have a competent person to oversee this work.
Where the building has been unoccupied for more than 30 days it is important to refer to your buildings water management plan and your water advisors as flushing, disinfection and other measures may be required.
Julie Spinks, managing director of WRAS, said: “Whilst businesses are understandably keen to open their doors, it’s important to consider all areas of health and safety, beyond those directly related to COVID-19.
“Stagnant water can pose a risk for the users and residents of any kind of building, so it is vital that the water system is prepared and refreshed before access resumes.
“Water UK’s guidance on recovering buildings and networks after prolonged inactivity provides clear and helpful information for anyone involved in managing a premises, but approved plumbers should also take the time to understand the recommendations to advise their clients accordingly.”