Where can I find more information?

Download Water UK’s guidance on recovering drinking water supplies in buildings and networks after prolonged inactivity: 

https://www.water.org.uk/publication/recovering-drinking-water-supplies-in-buildings-and-networks-after-prolonged-inactivity/

The CIPHE has produced guidance on mitigating the risk of building water systems post Covid-19:

https://www.ciphe.org.uk/contentassets/6afad4c40757443c88e68cf4c6a4f2b3/mitigating-the-risk-of-building-water-systems.pdf

For further advice on managing risks associated with Legionella visit: 

https://www.hse.gov.uk/coronavirus/legionella-risks-during-coronavirus-outbreak.htm