The Australian government’s decision to sue 3M for $2 billion over PFAS contamination at 28 Defence Force bases could mark a turning point in how the insurance industry must now think about environmental liability. The case - thought to be the largest legal claim ever brought by the Commonwealth - alleges the US manufacturing giant concealed its own laboratory testing showing significant adverse environmental effects from aqueous film-forming foam used widely on military bases from the 1970s. According to the government, this contamination issue has already cost taxpayers more than $1 billion on investigation, remediation and mitigation.
For brokers, the numbers are arresting. But the deeper message could be in the risk trajectory.
“In my view it appears PFAS is following a similar trajectory to asbestos, with latent claims, environmental remediation costs and legal proceedings emerging long after exposure,” said Christina Iordanidis (pictured), a senior advisor with Bellrock.
Both PFAS and asbestos are synthetic industrial compounds whose dangers were understood long before mainstream acknowledgement, both generated legacy liability that took decades to surface as litigation and both have ultimately redefined how the insurance market prices and underwrites long-tail risk.
Australia’s Senate Select Committee on PFAS, which handed down 47 recommendations late last year, found the country’s public health advice was lagging the growing international consensus that at least two PFAS chemicals - PFOA and PFOS - are carcinogens. The committee heard evidence linking forever chemicals to liver damage, heart disease, neurological and developmental effects, lower birth weight and elevated cancer risk. Australia’s government had credible advice that PFAS may be dangerous to human health from at least the year 2000. Its Defence Force did not fully phase out the foam until 2012.
The 3M lawsuit is calibrated to land hard. The allegation of concealment - that 3M withheld its own test results and gave assurances about environmental safety inconsistent with what the company knew - mirrors the conduct arguments that drove the asbestos litigation wave. If proven, it may make it considerably harder for defendants in related proceedings to argue that known-risk exclusions should extinguish coverage, or that limitation periods have run. The contamination has already spread well beyond base perimeters into surrounding groundwater and communities - a liability footprint that narrows the gap between government claims and private ones.
Iordanidis described this as a pivotal development that extends far beyond the parties in the Federal Court.
“As environmental risks evolve from niche exposures into the mainstream, it reinforces the importance of ensuring clients understand their disclosure obligations to insurers and the need for businesses to adopt strong governance and risk management frameworks at board level, not just operationally,” she said.
The point about board-level governance is significant. Environmental liability has long been treated as an operational matter, managed by site engineers and compliance teams rather than directors. What large-scale PFAS litigation demonstrates - as asbestos demonstrated before it - is that the liability ultimately lands on the entity, not the department, and that boards which fail to understand their exposure are poorly placed to disclose it accurately or defend it effectively.
The more immediate practical concern for brokers is a client base that is likely largely unaware of its own exposure.
“A challenge is that many businesses may not even realise they have legacy environmental exposure tied to PFAS chemicals, industrial processes, waste disposal or contaminated land, which can sit dormant for years before emerging as a claim,” said Iordanidis.
PFAS contamination risk is not confined to defence. Manufacturing, aviation, firefighting, industrial laundries, waste management, landfill operators and food packaging businesses all carry potential exposure. Brokers whose clients operate in these sectors - or occupy sites with legacy industrial history - face real risk that existing general liability policies will not respond when claims arrive. Environmental impairment liability cover is specifically designed for this purpose, but it remains significantly underutilised.
With a $2 billion government action now in the Federal Court, the litigation frontier on PFAS has formally arrived in Australia. Brokers will be asking their clients if they know their exposure and if the right cover is in place before a claim forces the conversation.
