Australia's $2 Billion Lawsuit Says 3M Knew About Forever Chemical Dangers Since 1973

Australia's federal government has filed 1,600 pages of court documents alleging that 3M knew as far back as 1973 that its firefighting foam could harm humans, animals and the environment, and kept selling it anyway. The claim is part of a lawsuit worth more than $2 billion Australian dollars, roughly $1.4 billion US, over PFAS contamination at 28 defence bases across the country, according to The Guardian.

Attorney General Michelle Rowland announced the suit in March, targeting both 3M and its Australian subsidiary over contamination linked to aqueous film-forming foam, known as AFFF. According to ABC News reporting, this is the largest legal claim the Australian federal government has ever filed.

The chemicals at issue, called PFAS or "forever chemicals," don't break down naturally. They persist in water, soil and the human body. Government lawyers allege in the filing that internal 3M documents connect the chemicals to reduced kidney function, altered immune function, effects on fertility and puberty, and lower birth weight in babies, according to The Guardian.

One document cited in the filing, dated April 1981, allegedly shows 3M barred women "of child bearing potential" from working at one of its plants in Alabama specifically because a fluorochemical used there could cause birth defects in rats. If that internal reasoning is accurate, it means the company was managing that risk internally at the same time it was marketing the products to governments, including Australia's, as "non-toxic" and "widely tested," per company brochures cited in the court filing.

Defence and other Australian government employees reportedly attended product demonstrations for AFFF as early as 1967 and 1968. Australia's Department of Defence didn't begin phasing out PFAS chemicals until 2004, meaning more than three decades passed between when the government alleges 3M should have known about the risks and when the country's own defence force started moving away from the products.

Three key PFAS compounds, including PFOA, were banned in Australia last year over long-running health and environmental concerns. PFOA has been identified as cancer-causing in humans, according to The Guardian's reporting on the filing.

The case landed in Federal Court in Melbourne for its first case management hearing, where Justice Catherine Button reportedly described the claim as one she'd "never seen" before and called it "daunting for everybody," according to ABC News reporting carried by the PFAS Project. Both the Commonwealth and 3M agreed the case is large and complex. It's a scheduling-stage acknowledgment that a 1,600-page statement of claim covering 28 separate contamination sites is going to take time to work through.

None of this is proof of legal liability yet. These are allegations contained in a statement of claim, not findings by a court. 3M has not been shown in these filings to have admitted wrongdoing, and no trial verdict exists. The strongest defense a company like 3M could reasonably raise, and one that's played out in similar AFFF litigation in the United States, is that regulatory science and safety standards for PFAS evolved substantially over the decades in question, and that products meeting the regulatory and industry standards of the 1970s shouldn't be judged solely by what's understood about PFAS toxicity today.

That argument separates a company failing to meet the standards of its own era from a company simply operating in an era before certain risks were fully understood or regulated. The Australian government's filing tries to close that gap by pointing to internal documents it says show 3M itself treated the chemicals as dangerous well before public disclosures caught up, including the Alabama plant policy from 1981.

Settlements in AFFF litigation elsewhere have already reached multi-billion-dollar scale before any of those cases went to trial, according to Newsquawk's market analysis. Evidence a defendant understood hazards decades earlier has historically strengthened plaintiffs' arguments for punitive damages and raised the ceiling on negotiated settlements. Markets are likely to watch this case not just for whether cleanup costs at 28 Australian bases move 3M's bottom line by themselves, but whether this filing encourages other governments or claimants to reopen or expand their own PFAS claims against the company.

The case remains in its early procedural stages. No trial date has been set in the reporting reviewed here, and the next concrete marker will be how the Federal Court manages a claim Justice Button herself has flagged as unusually large even by the standards of Australian litigation.