Cyanobacteria (Blue-Green) Algae
Aquatic cyanobacteria are known for their extensive and highly visible blooms that can form in both freshwater and seawater. The blooms can have the appearance of blue-green paint or scum, but can be other colours as well. These blooms can be toxic.
These can resemble fine grass clipping suspended in the water and when levels of growth are higher, scums can form on downwind shores.
Algal blooms can be toxic and pose a risk to human and animal health. When levels are high, warning signs are put up. For more information, see our Information Sheet, Blue Green Algae PH11 (PDF, 48 KB)(opens new window).
Concerns or Enquiries
The responsibility to manage algal blooms lies with the owner of the water concerned. However, for enquiries relating to cyanobacteria (Blue-Green Algae), please contact Click on this link to find out how to contact Environmental Health. Environmental Health will assess any action required against the relevant Scottish Government guidance and the Lothian and Fife Cyanobacteria Action Plan.
