The Public Health Act 2010 and the Public Health Regulation 2012 control various man made environments and systems which are conducive to the growth of Legionella organisms and which are capable, under the right conditions, of transmitting Legionnaires' disease.
These regulated systems include:
  • water cooling systems
  • hot water systems
  • warm water systems
  • air handling systems.



Policy Directives

Approved Warm Water Systems including Thermostatic Mixing Valves (TMVs)

Audit Tools


Notification Form

Legionnaires Disease

Thermal Power Station Main Water Cooling Systems

Page Updated: Thursday 18 July 2013