Residents near the Cadia goldmine in New South Wales have launched an environmental class action over pollution. The case cites a 'toxic trifecta' of air, land, and water pollution from the mine. Cadia Holdings, owned by Newmont, faces claims for compensation and an injunction to stop further pollution. The Cadia Community Sustainability Network, represented by William Roberts Lawyers, says nearby residents suffer from dust and heavy metal contamination. Lead plaintiff Jann Harries, living 3 km from the mine, reported "heavy metals in my water" and dust affecting livestock. She said, "We don't want the mine to close. But they have to be good neighbours." The group alleges pollution threatens local ecosystems and farming, with contaminants including heavy metals and PFAS. Lawyer Oliver Gayner said residents tried for years to raise concerns with Newmont and the EPA without success. Newmont confirmed it has been served court proceedings and said it will respond legally, adding, "Newmont takes its legal and regulatory obligations seriously and is committed to environmental stewardship." In 2025, Cadia was fined $350,000 for air quality breaches from 2021–2023. An EPA review found no clear evidence that Cadia caused major waterway damage but noted elevated heavy metals in groundwater and faults in water monitoring. NSW Health found "no definitive evidence" of health impacts from heavy metals in a study of local residents. A 22-month EPA air quality study around the mine found air quality generally good to fair. The legal battle continues as the community fights for cleaner air, water, and land around Cadia.