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Broome South Wastewater Treatment Plant


The Water Corporation holds licence L6266/1991/10 to operate the Broome South Wastewater Treatment Plant under Part V of the Environmental Protection Act 1986 (EP Act).

On 28 April 2014 the Department of Water and Environmental Regulation (DWER)* classified the plant contaminated – remediation required under the Contaminated Sites Act 2003 (CS Act), after routine monitoring found elevated concentrations of nutrients in groundwater beneath the site.

The groundwater assessment found that nitrogen and phosphorus exceeded local background concentrations, as well as assessment guidelines for tropical Australian aquatic ecosystems. 

DWER consulted with the Department of Health to classify the site and, while no risk to human health has been identified to date, further investigations are required to determine the potential risks to human health and the environment.

In addition, DWER has carried out a detailed risk-based review of the wastewater treatment plant’s licence.

* 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?

In order to understand the nature and extent of contamination the Water Corporation is required to carry out further groundwater investigations and assess potential impacts on Roebuck Bay under the CS Act.

DWER has also completed its risk-based review of activities at the plant and has provided a draft revised licence and decision report to Water Corporation for comment.

Water Corporation provided comments on the draft revised licence to DWER on 31 January 2017. These comments will now be considered and the revised licence finalised.

DWER will update this page when it finalises and issues the revised licence and decision report. 


More information

DWER will update this page as new information comes to hand. Residents who have issues or would like more information should email This email address is being protected from spambots. You need JavaScript enabled to view it..



Updated 11 April 2017