This provides access to a number of high-quality specialist contractors for water quality management services for the control of Legionella as well as other coliforms and biofilms. Services include risk assessment, sampling and subsequent reporting, treatment, and maintenance of water systems compliant with current legislation and, in particular, the HSE Legionnaires’ disease Approved Code of Practice. 

See link below for more information

https://www.supc.ac.uk/news/news/item/new-water