Heavy rain has left waterways at Rose Bay at risk, prompting warnings to swimmers that runoff from storms may have carried contaminants into the water.
Runoff from the storms has carried contaminants into the water, raising safety issues for locals and visitors.
Recent Concerns
The storms have caused significant stormwater runoff in Rose Bay, bringing sewage, chemicals, and debris into the bay. This pollution has led to increased health risks, making swimming unsafe. Beachwatch NSW has flagged the area as high-risk, advising people to avoid the water until conditions improve.
Dr Jasmin Martino, an aquatic ecology expert from the University of New South Wales, has noted that stormwater runoff can carry harmful pollutants as it flows through urban areas. These contaminants often include faecal matter from human and animal sources, which can introduce bacteria like E. coli into waterways. These bacteria can cause illnesses such as gastrointestinal issues, skin infections, and respiratory problems.
Dr Martino emphasises that vulnerable groups, such as children, the elderly, and those with weakened immune systems, are particularly at risk.
Current Risks
Swimming in polluted water poses serious health hazards. Experts recommend avoiding open ocean beaches for at least one day after heavy rain, and up to three days for lakes and rivers, which often lack the natural flushing effects of tidal movements.
Recent updates from Beachwatch NSW highlight ongoing risks in Rose Bay. The latest forecast shows a moderate chance of pollution, with water conditions marked as “Fair”.
Weather reports show possible showers, light rainfall, and moderate winds, while tide levels suggest potential for limited water circulation. Swimmers are urged to be cautious, particularly those in higher-risk health categories.
Shark Activity Adds to Warnings
Stormy weather has also triggered increased shark activity in Sydney Harbour. Bull sharks, often attracted to murky waters, are more active in warmer months and after heavy rainfall. Dr Martino has also observed that January and February are peak periods for bull shark activity in the area. Swimmers are encouraged to exercise extra caution, especially at dawn and dusk when sharks are most active.
Staying Safe
Authorities recommend avoiding swimming during and immediately after rainfall. If heading out, using designated enclosures and checking updated water quality reports is advised. Beachwatch NSW provides real-time updates on conditions, helping the public make informed decisions.
What’s Next?
Long-term solutions to reduce stormwater pollution in Rose Bay are being explored. In the meantime, staying alert and informed remains key.
Checking updates and understanding the risks can help the community enjoy the bay safely, even during challenging conditions.
Published 14-Jan-2025
