Coniston Mountain Rescue Team (CMRT) has issued a public warning after a dog named Ozzy died from suspected blue-green algae poisoning following contact with Coniston Water in the Lake District. The incident occurred last Saturday when Ozzy visited the iconic lake, later developing vomiting and lethargy. Despite immediate veterinary care, the dog did not survive.
Urgent Warning for Pet Owners
CMRT emphasized that blue-green algae blooms "can be present in lakes, streams and tarns, as well as reservoirs and ponds," with some producing "highly dangerous" toxins that can also affect humans. The team advised anyone planning to swim, boat, or walk their dog near water to check for warning signs. Symptoms in dogs include vomiting, diarrhoea, seizures, and breathing difficulties; owners are urged to consult a vet immediately if exposure is suspected.
Environment Agency Response
The Environment Agency (EA) stated it had "received no reports of blue-green algae at Coniston in the past days" but encouraged the public to log suspected sightings. Blooms occur naturally but are more frequent during warm, dry weather and are exacerbated by nutrients from pollutants such as sewage.
Guidance from Authorities
The Lake District National Park Authority echoed the guidance, warning it was "impossible to tell if algae is the dangerous kind just by looking at it, so it's best to not enter the water if you suspect there is [a bloom]." CMRT described the microscopic organisms as potentially looking like blue-green paint, scum, or greenish-brown discolouration.
In a Facebook post, CMRT said: "Following the incredibly sad loss of a dog named Ozzy who died from algae poisoning, after being in Coniston Water where Blue/Green algae is currently present, we wanted to raise awareness of the dangers this bloom can cause. Our thoughts are with Ozzy’s owners, we are so sorry for your loss."
Additional Incidents in Cumbria
Separately, parents in Cumbria raised concerns after several people required hospital treatment following swimming in the River Derwent at Camerton. One man reported his adult son attended A&E with sickness and diarrhoea, while Lesley Rourke, 38, from Workington, said her 14-year-old son also fell ill. North Cumbria Integrated Care Trust confirmed four patients attended A&E with diarrhoea and vomiting after open-water swimming.
United Utilities responded: "We're really sorry to hear that some people have been unwell. While we haven't received any direct reports from individuals, a range of factors can affect river water quality, including agricultural and highway run-off." An Environment Agency spokesperson added: "Our specialist officers are investigating potential sources of pollution on the River Derwent around Camerton after receiving reports to our incident hotline. We will take enforcement action where appropriate."
