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Mandurah Area Odours


The Department of Water amd Environmental Regulation (DWER)* is continuing to investigate transient odours in the Mandurah area—responding to complaints.

Last year, 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.

DWER has reviewed licences held by C-Wise, Mushroom Exchange and CM Farms and is proposing new conditions and specified controls for odour, waste acceptance, storage and management. 

The Department has received and considered comments and feedback from all three licence holders regarding the original proposed licence amendments. The licencees have until 30 March 2018 to comment on the revised draft licence amendments.

Once a final decision has been made on the proposed amendments, the amended licences and decision reports will be published on DWER's website.

DWER continues to liaise with the City of Mandurah, Shire of Murray, industry and the community.

More information

DWER will update this page as new information comes to hand. 

Unreasonable odours can be reported to DWER’s 24-hour Pollution Watch Hotline on 1300 784 782—at the time the odour is being experienced—or submit a report online


Updated 26 February 2018