North Woodburn reservoir: Blue-green algae detected

Algal blooms were confirmed by the Northern Ireland Environment Agency as being present in August at the rural site.

North Woodburn is designated as an Area of Special Scientific Interest (ASSI) due to its variety of bryophytes.

Photographs taken at the reservoir over the weekend show the body of water covered in a bright green scum, similar to that currently affecting Lough Neagh.

A spokesperson for DAERA said: “Further reports received August 12 and 24 and September 2 were confirmed via photographic evidence to the emergency pollution hotline. A subsequent report through the Bloomin’ Algae App was confirmed on September 7.

"DAERA Inland Fisheries have erected signage advising of the presence of Blue Green Algae in the reservoir.”

Guidance on blue-green algae and factors that contribute to its growth is available on the DAERA webpage.

It includes advice on what to do if you think you see the algae at a river, lake, or the sea.

A NI Water spokesperson said: “NI Water is aware of recent reports of potential algal blooms in the location of Woodburn North Reservoir.

“NI Water is confident there is no water quality issue in relation to the drinking water produced by the Water Treatment Works that abstracts water from Woodburn North Reservoir. NI Water monitor water from the water treatment works on a daily basis, to ensure that drinking water supplied to customers meets strict drinking water quality standards.

“You can’t tell if an algal bloom in the water is toxic just by looking at it, so it’s best to assume that it is harmful and take the following precautions:

- Do not swim in the water - swimming is not permitted in NI Water reservoirs regardless;

- Do not swallow the water;

- Avoid contact with the water or algae;

- Do not eat fish caught from the water;

- Pet owners should ensure that their animals do not have access to the water or drink the water.

- Observe and abide by any warning notices positioned around the water.”