Bacteria detected at Lake Douglas and Lake Hurlingham
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.

Media contact
For media enquiries, please contact the City’s Communications Officer.
- Phone 9474 0777
- Email media@southperth.wa.gov.au