Register a water cooling system


If your business uses a water cooling or warm water system, you’re required to register the system with us.

We maintain a register and undertake routine inspections to ensure these systems don’t pose a health risk.

Preventing the growth and transmission of Legionella bacteria, and subsequent outbreaks of Legionnaires’ disease, is an essential goal in managing cooling water systems. 

What are water cooling systems?

Water cooling and warm water systems are used to filter, cool or warm air and water. They are used in places like nursing homes, childcare centres, hospitals, commercial premises, and industrial buildings.

They include:

  • Air-handling systems
  • Evaporative cooling systems
  • Hot-water systems
  • Humidifying systems
  • Warm water systems
  • Water cooling systems, and their associated equipment and fittings.

How to register your system

To register your system, you’ll need to complete this registration form.

You'll need to have the following information when completing the form:

  • The type of system
  • The address of the premises on which the system is installed
  • The name, and the residential and business addresses, of the owner of the premises
  • Whether the operation area on the premises is occupied otherwise than by the owner
  • Contact details during and after business hours for the occupier.

Send your completed form to This information is required to ensure the system can be accessed in an emergency. 

If any of these details change, it’s a requirement to notify us within 7 days by competing a new registration form.


Further information

  • The NSW Health website has information on the responsibilities for maintaining your system and fact sheets on legionella control.
  • Contact us if you have any questions about registering your system.