Port Phillip and its estuaries support unique ecosystems facing constant pollution threats from increasing urbanisation, agricultural and industrial activities, and climate change. Increased contaminant loads from the catchment can cause a range of environmental and public health impacts, such as algal blooms beach closures and direct toxicity. The estuaries link freshwater systems to the bay and also serve as primary pathways for pollutants. Understanding contaminant trends and their impact is crucial for the long-term conservation of the bay. A lack of systematic contaminant monitoring, however, impedes evidence-based management and policy development necessary for preserving Port Phillip and its estuaries into the future.
To address this, a collaborative three-year research program is underway, involving scientists, industry and the community. This program aims to assess contaminant trends in Port Phillip and its estuaries using innovative screening techniques to detect over 40,000 contaminants, including pesticides, pharmaceuticals, and industrial compounds. Systematic monitoring across 19 estuaries and the bay, supplemented by toxicological assessments in critical areas, will enhance our understanding of contaminant presence and likely impacts. This presentation will outline the research approach, discuss initial findings, and explore their implications for maintaining bay and estuary health.