Contaminated sites

The Department of Water and Environmental Regulation administers and enforces the Contaminated Sites Act 2003 and Contaminated Sites Regulations 2006.
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In Western Australia, we regulate contaminated sites through the Contaminated Sites Act 2003 and Contaminated Sites Regulations 2006.

We also work with the Department of Health in relation to public health issues at contaminated sites.

To report a known or suspected contaminated site, please complete and submit Form 1: Report of a known or suspected contaminated site.

For general information and the timeframes for assessments and determinations view our Regulatory Services fact sheet.

DWER collects and uses the personal information you provide to process your request or form, in line with the PRIS Act 2024 (WA) and the Contaminated Sites Privacy Collection Notice.

Find out more below.

Assessing and classifying contaminated sites

Read about how we assess and classify contaminated sites.

Contaminated Sites Database

Search online for contaminated sites across Western Australia, free of charge.

Frequently asked questions

Answers to frequently asked questions about contaminated sites.

Asbestos

Information about the handling, removing, transporting and disposing of asbestos.

Contaminated sites auditors

Find a contaminated sites auditor accredited in Western Australia.

Guidelines, fact sheets and technical advice

View guidance on contaminated sites.

Forms

Forms to report a contaminated site or request information.

Buying or selling land

Information for real estate professionals on checking if a property has confirmed contamination.

Contaminated site management plans

Plans that define how a contaminated site is to be managed or monitored.

Review of the Contaminated Sites Act 2003

The Contaminated Sites Act 2003 was reviewed in Parliament in 2015.

Contaminated Sites Committee

The Committee makes decisions when there is disagreement about clean up and remediation responsibilities and classifications of contaminated sites.

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