A SUSPECTED outbreak of algae at Llandrindod lake has been confirmed – meaning the majority of watersports and other activities on the lake remain suspended until further notice.

Lakeside Boathouse announced on Sunday, August 15, that they were suspending all watersports and fishing immediately following a suspected outbreak. They posted on their Facebook page saying only dragon boats would be in operation in the meantime.

Powys County Council and Natural Resources Wales conducted tests into the possible outbreak early this week and the environmental body confirmed the bad news at around 5pm on Thursday.

“We’ve identified blue-green algae at Llandrindod Wells lake,” they tweeted.

“It can produce toxins that cause rashes on humans and illnesses if swallowed. It can be very dangerous to animals.

“Avoid all contact with the blue-green algae and water.”

As a result of the outbreak, the council is recommending that activities – especially where immersion in the water is likely – are restricted.

The algae produce toxins which can cause skin rashes, nausea, vomiting, stomach pains, fever and headache if swallowed. Occasionally it can cause more serious illness such as adverse effects on the liver and nervous system.

The blue-green algae (also known as cyanobacteria) occur naturally in inland waters, estuaries and seas and cannot be removed or treated. They thrive in warm conditions and are likely to come and go throughout the summer season.

Given the potential health risks caused by blue-green algae people are advised not to swim in the water or to become immersed, eg stand-up paddle boarding; not to swallow the water; to avoid contact with the algae; not to eat fish caught in Llandrindod lake; not to allow pets or livestock to come into contact with the water and to observe and abide by notices positioned around Llandrindod lake.

Lee Percy, of Lakeside Boathouse, said they had been informed of the news on Wednesday afternoon.

“Hi all, so we have had some of the tests back from our water sample and it's bad news I am afraid.

“We do have some levels of blue-green algae and for the time being we will only be running the dragon boats.

“We shall be having a meeting with the relevant authorities, hopefully this Friday, where we will decide what and if any other water activities we can put back on safely. We will keep you all posted.”

The local authority said it would comment shortly on the incident.