Warning issued after blue-green algae discovered at Thirlmere

The Environment Agency (EA) confirmed the presence of the toxic algae at Thirlmere, near Keswick, after conducting laboratory testing on water samples collected on July 14. 

A spokesperson from the EA said: "We have informed the landowners and other statutory bodies so that action can be taken to put up signs to alert the public."

According to Environment Agency public guidance: "Cyanobacteria or ‘blue-green algae’, a type of blooming algae, can produce toxins.

"These toxins can kill wild animals, livestock and pets.

"They can also harm people, producing rashes after skin contact and illnesses if swallowed.

"Keep pets and children away from the water and avoid skin contact with the water or algae. Report the bloom to the Environment Agency." 

British Veterinary Association president Malcolm Morley said: “Lots of dogs love water and won’t hesitate to dive straight in when they see a lake or go for a paddle in a pond.

"But toxic blue-green algae is very difficult to identify and, if ingested, can make dogs seriously unwell – and can even be fatal.

"We’re urging pet owners to keep their dogs on leads near water bodies where blue-green algae has been confirmed or, if unsure if a water body is safe, to keep them away from it completely.

"It may seem a shame to spoil your dog's fun, particularly if they are used to swimming somewhere, but if you are unsure it is safe, it is not worth the risk.

"Being aware of the symptoms of exposure is also vital as there is no known antidote for the toxins and prompt treatment is critical to help give a chance of recovery.

"Symptoms can appear within a few minutes or hours of exposure, and commonly include vomiting, diarrhoea, drooling, disorientation, trouble breathing, seizures, and blood in faeces.

"If you have any concerns or are worried your pet may have had contact with blue-green algae, speak to your vet as soon as you can," he said.