• EPA Tasmania
  • Assesment
  • Regulation & Assessment
  • Sustainability
  • Policy & Legislation

Blue-Green Algae

​​​Blue-green algae are microscopic organisms that can produce toxins that are harmful to humans and animals. Blooms of blue-green algae can occur in sewage lagoons because lagoons contain an abundance of nutrients on which the algae feed.

Lagoon operators must be mindful of their role in minimising public and environmental health risks from the release of blue-green algae toxins into the environment via sewage lagoon effluent.

The EPA has developed the Guidelines for Managing Blue-Green Algae (Cyanobacteria) in Sewage Lagoons March 2011 to provide guidance on how to monitor and manage blue-green algae blooms. Please contact us if you would like to access these guidelines.


Waste and Wastewater Section
134 Macquarie Street
Hobart TAS 7000
Phone: 03 6165 4599
Email: Enquiries@epa.tas.gov.au

The Environment Protection Authority acknowledges the Tasmanian Aboriginal people as the traditional custodians of lutruwita (Tasmania) and pays respect to their Elders, past and present.