SWIMMERS have been warned to beware toxic blue-green algae which has formed in Bury's reservoirs, lakes and rivers.

Health inspectors say that people could become seriously ill after coming into contact with the growth. They are urging those enjoying the summer to think twice before taking a dip.

The algae occurs naturally and during warm, calm weather can multiply and rise to the surface to form jelly-like scum. The algae can be blown around the surface of the water and appear at different places at different times.

It can affect the health of both humans and animals because of the toxins it produces.

Councillor Mike Connolly, public protection spokesman, said: "Everyone, especially children, should be aware of the potential dangers involved in entering open water sites.

"Cold and cramp, leading to drowning, is always a danger but, particularly at this time of year, users should be aware of blue-green algae and its potential to cause harm." Neither the council nor the health authority have any records of people falling ill in Bury because of the algae.

But the Department of Health has issued the following statement: "Illness including skin rashes, eye irritation, vomiting, diarrhoea, pains in muscles and joints have occurred in some recreational users of water who swallowed or swam through algal scum.

"There have been no reports of long-term effects or deaths in humans, but in some cases the illnesses were severe. Although algal scum is not always harmful, it is a sensible precaution to avoid contact with it and the water close to it."

The council says it will not remove the algae but leave it to disperse as the weather changes.

Anyone in doubt should contact the environmental services department on 253 5566.

Pictured bravign the algae at Clarence Lido is Adam Teh of Owlerbarrow Road, Bury with a skimmer fish caught at the lido.

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