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Mandurah Area Odours


The Department of Water and Environmental Regulation (DWER)* is continuing to investigate transient odours in the Mandurah area and respond to complaints on this matter.

In 2016, DWER carried out early morning odour patrols and inspected 11 licenced facilities in the area with potential to contribute to odour emissions. These included wastewater treatment plants, waste transfer stations, landfills, composting operations and piggeries.

Between April and June 2016, DWER also carried out five odour field surveys in Mandurah and surrounding suburbs to investigate potential odour sources.

Analysis of these surveys identified odour events up to 800 metres from natural sources including Black Swan Lake, Goegrup Lake and sections of the Serpentine River. These natural odours are likely to increase during summer when organic matter breaks down from dried and potentially odorous lake floors or river banks that are exposed to the air and sun.

The surveys also identified three licensed premises which are high-risk sites for odour emissions due to their location within the Mandurah area, proximity to one another and activities carried out onsite. They include a composting facility (C-Wise), a composting facility (Mushroom Exchange) and a piggery (CM Farms).

As a result, DWER has undertaken a risk-based review of the licences of these facilities to determine the appropriateness of controls relating to odour, environmental management and containment infrastructure.

* The former Department of Environment Regulation amalgamated on 1 July 2017 with the Department of Water and the Office of the Environmental Protection Authority, forming the Department of Water and Environmental Regulation.

What is happening now?

DWER has amended licences held by C-Wise (L8410), Mushroom Exchange (L7210) and CM Farms (L6932). The amended licences include conditions relating to controls for odour, waste acceptance, storage and management.

The Department has considered comments and feedback from all three licence holders regarding the licence amendments.

The amended licences has been published on DWER's website and can be viewed here by searching for the relevant licence number.

The amended licence for CM Farms has been appealed under section 102 of the Environmental Protection Act 1986. The appeal is currently being investigated by the Appeals Convenor and will be determined by the Minister for Environment. For further information regarding the appeals process, please visit the Office of the Appeals Convenor website or call 6467 5190.

Updated 17 September 2018