MANSFIELD residents are being advised to keep away from two ponds in Mansfield after blue-green algae was spotted.
The public is also being advised to keep their pets away from the ponds at Hermitage Local Nature Reserve and Berry Hill Park.
The algae can produce toxins which can harm, or even kill, animals and cause skin-rashes, eye irritation, vomiting, diarrhoea, fever and muscle and joint pain in people.
Dog owners are being asked to keep their dogs on leads when they are close to the ponds.
Warning signs have been put up at both sites.
Martyn Thurman, Head of Neighbourhood Services, said: “Blue-green algae is a natural occurence in mild and warmer weather.”
He added: “It tends to disperse naturally when the weather gets colder.
“Until then we would ask the public to ensure they and their pets avoid contact with the water in these ponds.”
For further information and advice about blue-green algae, you can visit the Environment Agency website on www.environment-agency.gov.uk