Bacteria detected at Lake Douglas and Lake Hurlingham

News Update 17 April 2026
Following recent rain, Microcystis bacteria has been detected at Lake Hurlingham and Lake Douglas.  

The green algae bloom, which forms a bright green surface film, is a known toxin-producing cyanobacteria. Warning signs have been installed, and aerators have been switched off to reduce the risk of the bacteria becoming airborne. 

Please avoid contact with the water and keep dogs away from the lake edges. 

The City is undertaking further water testing and will continue to monitor conditions. 

 

A lake with the city in the background

Media contact

For media enquiries, please contact the City’s Communications Officer.