Environmental management – guidance

Blue-green algae: advice for the public

Leaflet explaining blue-green algae.


Blue-Green Algae

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Blue-green algae naturally occur in inland waters, estuaries and the sea. Blooms can form when their numbers become excessive. This leaflet describes characteristic features of blue-green algal blooms, how they affect you and what you should do if you see one.

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To order a hard copy of this publication, please email our mailing house environmentagency@prolog.co.uk with your name, address, publication title (‘Blue-Green Algae’), reference (‘LIT 4135’) and quantity.

For any other questions about this publication, please email enquiries@environment-agency.gov.uk.