Spavin Lake algal bloom

Published on 23 December 2020

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Update 28/01/2021: 

The blue-green algal bloom appears to have cleared, however the toxins can remain in the water even after the algae has vanished - in some cases for weeks. The warning to stay away from the water remains in place for now. Council staff will reassess the lake in early February to determine if the warning can be lifted.

Western Water has informed Council of a blue-green algal bloom at Spavin Lake in Sunbury.  

People and animals should avoid contact with the water at Spavin Lake until advised it is safe. 

If you do come into contact with the water, remove wet clothing and wash/rinse off any affected area if necessary. If any health-related symptoms are present, consult a doctor and avoid further exposure. 

Follow our website or Hume City Council’s Facebook for updates.  

Learn more about blue-green algae here. 

Photo credit: Stephanie Nicholls

What is blue-green Algae?

Blue-green algae naturally occurs in freshwater throughout Australia. Blooms of this algae can occur in response to favourable conditions, which include still or slow-flowing water, abundant sunlight, hot temperatures and sufficient levels of nutrients. 

Blue-green algal blooms are potentially dangerous to human, animal and fish health.

As the name suggests, blue-green algae looks green, but sometimes turns to a blue-like colour when dying.

How long does blue-green algae last?

Blue-green algal blooms can persist for several weeks, sometimes months. This is dependent on the weather and flow conditions. 

Cooler, windy weather or increased flow may reduce or prevent blooms from occurring.

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