Sydney Filters the Future of Clean Water

New research by Sydney Water and Emerging Compounds Treatment Technologies offers a rapid, chemical-free solution to remove PFAS from urban water

24 Apr 2026

Sydney Water and Emerging Compounds Treatment Technologies (ECT2) have developed a hybrid filtration system capable of removing per- and polyfluoroalkyl substances (PFAS) from municipal water without chemical additives. The project was recently named a finalist for the 2026 National Infrastructure Awards, marking a shift toward more adaptable remediation strategies for utility providers.

The system utilizes a dual-layer approach, combining granular activated carbon with ion exchange technology. This configuration is designed to capture a broad spectrum of PFAS molecules, which vary significantly in chain length and chemical behavior. By integrating these two methods, the pilot demonstrated an ability to maintain water quality standards even during periods of fluctuating contamination levels.

Unlike traditional treatment plants that often require extensive footprints and pre-treatment chemicals, this model is designed for integration into existing infrastructure. This capacity for retrofitting reduces capital expenditure and shortens the timeline for deployment. The design emphasizes physical separation over chemical reaction, lowering the operational complexity for utility managers.

The success of the Sydney pilot provides a technical roadmap for other jurisdictions facing similar environmental challenges. The modular nature of the technology suggests it is scalable for both small local councils and large metropolitan networks.

Industry focus is now shifting toward the long-term management of the concentrated waste produced by such systems. While the filtration process effectively isolates contaminants from the water supply, the permanent destruction of captured PFAS remains a separate regulatory and technical hurdle. Policymakers are expected to monitor the Sydney model as a potential standard for urban water security as national environmental guidelines tighten.