SUSPECTED blue-green algae bloom was detected from water samples at Lake Hamilton on Tuesday by the Southern Grampians Shire Council (SGSC), indicating an unacceptable level of the potentially harmful bacteria.

Blue-green algae may cause skin irritation following contact with the water, as well as eye irritations, nausea, vomiting, muscle weakness or cramps as reported by some people who have swum through or swallowed the algae.