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The Public Health Act 2010 requires councils to regulate premises with systems which have the potential to transmit Legionnaires disease. This includes water cooling towers commonly used for air-conditioning or industrial cooling processes (e.g. ice making), and warm water systems such as thermostatic mixing valves and recirculating warm water systems used in hospitals and nursing homes.
You must notify us within 1 month of:
You must notify us within 7 days of:
Notify us using the online form below.
Notification of Cooling Towers and Warm Water Systems
We will issue a unique identification number (UNI) for each cooling tower we are notified about. All cooling towers must have their UNI displayed.
The UNI must be displayed on a sign attached to the cooling tower. Each sign must be:
The Occupier must arrange for a Risk Management Plan (RMP) to be developed at least every five years, and more frequently for higher risk systems.
The RMP considers the risk of Legionella growth and transmission from a cooling water system, and identifies actions and control strategies to reduce the risk.
The certificate of completion for the RMP must be submitted to us within 7 days of receiving it.
For information about who can carry out risk assessments see the NSW Health web page on Legionella control in cooling water systems - Competent person
The system must be sampled for Legionella and heterotrophic colony count every month.
It is the responsibility of the Occupier to notify us within 24 hours of receiving a reportable test result (Legionella count ≥1,000 cfu/mL or heterotrophic colony count ≥5,000,000 cfu/mL).
Please advise us of reportable test results by emailing firstname.lastname@example.org
For more information on reportable test results refer to the NSW Health Guidelines – Legionella Control in Cooling
The cooling tower system and RMP must be independently audited every 12 months. The independent auditor will provide a certificate of audit completion to the occupier.
The certificate of audit completion must be submitted to Council within 7 days of receiving it.
For information about who can carry out audits see the NSW Health web page on Legionella control in cooling water systems - Independent auditor
You must ensure the following documents are maintained on site:
NSW Health - Legionella Control
NSW Guidelines for Legionella Control in Cooling Water Systems
You must notify Council within 1 month for:
You must notify Council within 7 days for:
Notify Council using the online form below.
Council will arrange for an annual inspection of the system. You can review the checklist below to see what will be checked.
Warm Water System Operation and Maintenance Inspection Checklist(PDF, 738KB)
Fees are charged for these inspections, see Council’s fees and charges
NSW Health Policy Directive: Water – requirements for the provision of cold and heated water
Public Health Act 2010
Public Health Regulations 2022
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