A POTENTIALLY harmful bacteria has been found in Lake Hurlingham and Neil McDougall Lake.
Water testing identified two species of Cyanobacteria, a blue-green algae which may have appeared due to the recent rains and high nutrient levels in water.
The City of South Perth Environmental Management team warn direct contact with the water bodies should be avoided as there can be harmful effects for humans or animals.
Both lakes will be continued to be monitored until the bloom has cleared.
More information can be found at Healthy WA.