The lower pond at Radnor Park pond in Folkestone has been fenced off by the district council after blue-green algae has been discovered in the water.

Shepway District Council have reportedly confirmed that the Environment Agency have tested the water and that there is blue-green algae (Cyanobacteria) at the pond next to the Royal Victoria Hospital.

The pond has been cordoned off but more substantial fencing and signs advising people to keep away from the water are to be erected.

The algae is potentially toxic and dog walkers should keep their pets away from the water.

Folkestone County Councillor Tim Prater praised the council for their fast action on the outbreak.

"I've asked them how quickly the outbreak of algae is likely to be cleared and fencing and signs can be removed so that local residents can enjoy the pond as before. In the meantime, it is possible that the algae can produce toxins which are dangerous to humans and animals.

"Keeping outside the security fencing, and ensuring your pets do so as well, will minimise any risk," Cllr Prater said.

The World Health Organisation state the following:

Cyanobacterial Toxins

Cyanobacteria or blue-green algae occur worldwide especially in calm, nutrient-rich waters. Some species of cyanobacteria produce toxins that affect animals and humans. People may be exposed to cyanobacterial toxins by drinking or bathing in contaminated water. The most frequent and serious health effects are caused by drinking water containing the toxins (cyanobacteria), or by ingestion during recreational water contact.

The disease and how it affects people

Disease due to cyanobacterial toxins varies according to the type of toxin and the type of water or water-related exposure (drinking, skin contact, etc.). Humans are affected with a range of symptoms including skin irritation, stomach cramps, vomiting, nausea, diarrhoea, fever, sore throat, headache, muscle and joint pain, blisters of the mouth and liver damage. Swimmers in water containing cyanobacterial toxins may suffer allergic reactions, such as asthma, eye irritation, rashes, and blisters around the mouth and nose. Animals, birds, and fish can also be poisoned by high levels of toxin-producing cyanobacteria.

Hawkinge Gazette and Channel Coast News 2011©