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City of Wollongong
  • Council has been liaising with WaterNSW who coordinate and support Regional Algal Co-ordinating Committees (RACCs).
  • We have been regularly monitoring the Coomaditchie Lagoon for levels of blue-green algae and reporting to WaterNSW under the NSW Guidelines to Management Response to Freshwater, Marine and Estuarine Harmful Algal Blooms.
  • Council has also undertaken water sampling.
  • Algae warning signs have been placed around the lagoon.
  • Regular and on-going communication with key stakeholders groups to keep them up to date.
  • Council will be installing aerator pumps as a low-impact management action in an attempt to reduce algal levels.
    • Aeration increases water circulation and oxygen concentrations throughout the water column, of which blue-green algae do not survive well in. It also creates an environment that allows other diatoms and good algae to proliferate and outcompete the blue green algae.
  • We will continue to conduct regular monitoring of the lagoon until high levels dissipate.