Understanding PFAS Contamination: What Property Owners Need to Know

Per- and polyfluoroalkyl substances (PFAS) have become one of the most significant environmental challenges facing property owners, developers, and regulators across Australia. Often called "forever chemicals" due to their persistence in the environment, PFAS contamination presents unique challenges that require careful navigation.

What are PFAS?

PFAS are a group of manufactured chemicals that have been used since the 1950s in a wide range of industrial and consumer products. Their unique properties - resistance to heat, water, and oil - made them invaluable in applications from non-stick cookware to firefighting foams.

However, these same properties mean PFAS don't break down naturally in the environment. They accumulate in soil, groundwater, and living organisms, creating long-term contamination issues that are challenging and costly to address.

Common Sources of PFAS Contamination

Understanding where PFAS contamination typically originates helps property owners assess their risk:

• Firefighting training areas - Aqueous film-forming foams (AFFF) used at airports, defence facilities, and fire stations
• Industrial facilities - Manufacturing plants, particularly those producing textiles, electronics, or paper products
• Landfills - Leachate from disposed consumer products containing PFAS
• Wastewater treatment plants - Concentration of PFAS from multiple sources

The Regulatory Landscape

Australia's approach to PFAS regulation continues to evolve. The PFAS National Environmental Management Plan (NEMP) provides a nationally consistent framework, but implementation varies by state. Key points for property owners:

• Investigation and remediation requirements can be triggered by property transactions, development applications, or regulatory notices
• Screening criteria for soil and groundwater are conservative and health-based
• Disclosure obligations may apply when selling or leasing contaminated land

What Property Owners Should Do

If you suspect PFAS contamination on your property, or are acquiring land with potential PFAS sources, consider these steps:

1. Historical review - Understand past land uses and potential sources
2. Preliminary assessment - Targeted sampling to confirm or rule out contamination
3. Detailed investigation - If contamination is confirmed, characterise the extent and pathways
4. Risk assessment - Determine actual risks to human health and the environment
5. Management or remediation - Develop an appropriate response based on risks and land use

The Path Forward

PFAS contamination doesn't have to derail a property transaction or development project. With proper investigation, clear-eyed risk assessment, and pragmatic management strategies, most sites can be made suitable for their intended use.

The key is engaging early with experienced professionals who can help you understand your obligations, navigate regulatory requirements, and develop cost-effective solutions.