Blue Green algae alert for Lake Carramar, Patterson Lakes.

Melbourne Water is advising people to avoid contact with Lake Carramar, following the detection of blue-green algae.

Lake Carramar is one of three private lakes in the area, and although it is unlikely the general public will come into contact with any of the affected water, signs have been erected in the area as a precaution.

Melbourne Water Manager of Regional Services (South East), John Woodland said there were many forms of blue-green algae and the species currently present could be harmful to animals or humans.

"It’s important that people avoid contact with the water and make sure that it does not come into contact with their skin or eyes," Mr Woodland said.

"Pet owners are advised to take similar precautions and keep their animals from entering the water or from drinking it."

"Melbourne Water will sample the water regularly and keep a close watch on the problem. Signs have been erected around the lake to warn people of the potential hazards."

Melbourne Water is working with Kingston City Council to manage the algae bloom in line with Victorian Government guidelines, and will continue to monitor the site.

Blue-green algae occurs naturally in waterways and forms blooms during hot weather, periods of drought or low flow, or where there is an accumulation of nutrients in waterways or water bodies.

Media contact: Catherine Garrett : 0419 219 084