Blue-green algae (BGA) blooms can be harmful to the health of people and animals.
Further information about blue-green algae is available from the Department of Environment Land Water and Planning (DELWP) website or by calling 136 186.
Information on Health effects of Blue-green algae are available from Health.Vic website or by calling 1300 761 874 (business hours)
For enquiries about specific waterways it is best to contact the right agency.
We are the Local Water Manager and responsible for monitoring Blue-green algae in the following waterways:
Balyang Sanctuary, Newtown
Blue Waters Lake, Ocean Grove
Cowies Creek-Wetland, Lovely Banks
Eastern Park Lake, Geelong
Gateway Sanctuary, Leopold
Grinter Reserve wetland, Moolap
Lake Lorne, Drysdale
Lara Lakes, Lara
McLeods Waterholes (large lake only), Drysdale
St Leonard’s Lake, St Leonards
Seascape Drive Wetland, Indented Head
Zillah Crawcour Park-Waterhole, Newtown
Reasons for monitoring blue-green algae
Some types of blue–green algae blooms are toxic and direct contact can be harmful to the health of people and animals. We monitor and issue alerts for Council managed waterways where recreational activities may bring people or pets in direct contact with water.
We monitor blue-green algae in our waterways at times when there is a risk of blooms, usually from January to April each year.
Warning notices are given when blue-green algae blooms is detected at a level that pose a health risk. Notices are posted weekly in the City News section of local newspapers and on our website. Warning signs are also displayed on site at the affected waterways.
Direct contact with blue-green algae can cause allergic reactions such as skin rashes or itchiness; sore eyes ears and nose or if swallowed gastroenteritis, nausea or vomiting.
People who come in to contact with contaminated water should wash immediately in fresh water. Seek medical advice if experiencing illness after contact with BGA affected water.
Pet owners should prevent pets from drinking or having direct contact with contaminated water. If contact occurs wash immediately in fresh water and seek Veterinary advice if pet shows signs of illness after contact with BGA affected water.