Causeway Chronicle

WARNING – Potentially Toxic Algae

Causeway Coast and Glens Borough Council has been made aware that blue-green algae has been spotted within the Borough in the Bann and Agivey Rivers. 

It is advised that all contact with water containing these algae is avoided. Farmers and pet owners should also ensure that their animals do not have access to this water.

With a growing interest in recreational water-based activities and as we enter summer, more people are spending time enjoying our local rivers and lakes.

NIEA are encouraging the public to get involved in citizen science and help monitor blooms of blue-green algae (cyanobacteria) to help protect public health and continue to enjoy our local water environment.

Swimmers, boaters, dog owners, anglers and anyone else spending time this summer in, or around, fresh water can now record the presence of harmful algal blooms with an app called “Bloomin’ Algae”, developed by the UK Centre for Ecology & Hydrology (UKCEH).

Blue-green algae (cyanobacteria) is a type of algae that can occur naturally in lakes, ponds, canals, rivers and reservoirs. Unlike other types of algae, if it becomes too abundant it can pose a health risk to people, pets and wild animals who come into contact or ingest it. It can cause skin rashes, eye irritations, vomiting, diarrhoea, fever and muscle and joint pain. Blue-green algae has also been attributed to the death of dogs, birds, fish and livestock in parts of the UK.

For further information or if you suspect you have seen this algae please contact Northern Ireland Environment Agency using their reporting app for suspected sightings of blue green algae.

More details here:


Maurice Bradley