Blue-green algae blooms

Alert issued 20/03/2023 10:57am

Blue-green algae blooms have been confirmed in the following locations, detecting a red alert for toxic blue-green algae:

  • Grand Prix Lake, Oran Park
  • Harrington Park Lake, Harrington Park
  • Harrington Park Wetlands, Harrington Park.

Monitoring undertaken by Council has identified the presence of a toxic species of algae at levels that present a health risk associated with contact with the water. Residents are advised human and animal contact with the water should be avoided, including drinking, fishing, swimming, boating and allowing pets to enter the water.

Algae is a natural part of the aquatic ecosystem with most species safe or non-toxic. However, blue-green algae produce toxins that can be damaging to humans, domestic animals and livestock that come in contact with the water.

In normal conditions, the blue-green algae exist in low numbers and are a part of a healthy ecosystem. However, under certain conditions, the algae can grow rapidly, producing an algal bloom.

Signage will be erected at locations around the Lake to advise visitors to avoid contact with the water.

It is not possible to predict how long the algae will remain at high levels. Council will continue fortnightly monitoring of the water quality of Grand Prix Lake and signage will remain in place until blue-green algae levels have reduced to a safe level.

For more information, or to ask any questions, contact Council’s Sustainability Team on 4654 7777 or

You can also find updates here.

Nepean River Cycleway

Alert issued 20/12/2022 3:44pm

Camden has seen extensive damage across the Nepean River catchment as a result of the four floods that have occurred since February this year, including significant bank erosion along the Nepean River Cycleway.

Council is working with engineers and geotechnical specialists to determine works that need to be undertaken to protect the cycleway moving forward. 

The playgrounds and fitness stations along the Cycleway have been reopened.

Some areas along the Cycleway are still fenced off due to significant erosion.