| Subscribe for news
Sep
04th

NSW Guidelines for Legionella Control in Cooling Water Systems

On August 10th 2018 the NSW Guidelines for Legionella Control in Cooling Water Systems was updated.

The Guidelines provide practical guidance on the legal requirements in the Public Health Act 2010 and the Public Health Regulation 2012 and outline the safe and effective management of cooling water systems for all stakeholders.

For those responsible for managing cooling water systems it is essential that plans be in place to prevent the growth and transmission of Legionella bacteria, and subsequent outbreaks of Legionnaires’ disease.

The updated Guidelines are aimed to assist stakeholders in the following key areas:

  • Understanding their roles and responsibilities
  • Understanding the impact of Legionnaires’ disease
  • Providing an overview of cooling water systems
  • Outlining the risk factors associated with cooling water systems
  • Explaining the process for undertaking risk assessments
  • How to conduct an audit, and;
  • Outlining the reporting, response and administrative requirements

The regulation of cooling water systems is paramount in reducing the likelihood out Legionella outbreaks.

Poorly managed cooling water systems can provide ideal conditions for the growth and transmission of Legionella bacteria.

The regulatory approach to managing cooling water systems in NSW was previously based on a prescriptive approach whereby all cooling water systems were to be managed based on same set of minimum criteria.

This has been replaced with a risk management approach which requires the individual characteristics and unique risks of each cooling water system to be assessed and controlled.

This approach introduces six safeguards to minimise Legionella transmission, provide multiple levels of oversight, and ensure that problems are pre-empted, escalated and responded to in a timely manner. See the table below for details:

Although the risk management approach requires cooling water systems to be maintained in accordance with AS/NZS 3666 Part 3 rather than Part 2, other parts of AS/NZS 3666 remain relevant for some aspects of managing cooling water systems. These include:

• Installation, design and commissioning in accordance with AS/NZS 3666 Part 1

• Operation (but not maintenance) in accordance with AS/NZS 3666 Part 2

• Maintenance in accordance with AS/NZS 3666 Part 3.

An overview of the regulatory approach in NSW is provided in the following flow diagram:

To read the full guidelines click here.

Or follow the link to find out more about creating a Legionella Risk Management Plan


Recent Posts

Is HVAC a risk in quarantine hotels?

02nd Dec

We look at the evidence for airborne transmission in hotel quarantine....

Embarking on our Reconciliation Journey

05th Nov

Ann Hunter recently joined us for training in the services QED provides to customers....

Latest Research: COVID-19 survives up to 28 days on surfaces

14th Oct

CSIRO scientists tested the SARS-CoV-2 virus to see how long it survived on surfaces...

View All
QED FEATURED ARTICLES

How IEQ Impacts Employee Productivity

We believe tenants should engage with landlords on the indoor environment quality with the same level of importance at which they consider the energy consumption of a building – it will improve their bottom line faster!

White Papers

April 06th 2020

COVID-19 Cleaning & Cleaning efficacy

A simple guide on what you need to know about cleaning ...

January 20th 2020

Mould Causation, Prevention & Remediation

In this whitepaper we cover everything you need to know...

October 30th 2019

Water Borne Pathogens: Pseudomonas aeruginosa

Any facility that is producing a water quality man...

View More

Latest News

December 02nd 2020

Is HVAC a risk in quarantine hotels?

We look at the evidence for airborne transmission in ho...

November 05th 2020

Embarking on our Reconciliation Journey

Ann Hunter recently joined us for training in the servi...

October 14th 2020

Latest Research: COVID-19 survives up to 28 days on surfaces

CSIRO scientists tested the SARS-CoV-2 virus to see how...

View More

Need more information? We’re here to help you...

Get in touch