Toxic blue-green algae above warning level in lake

Water from Hemlington Lake has been tested by the Environment Agency

Visitors are being advised to avoid contact with the water in a lake after testing revealed it contains toxic blue-green algae.

The bacteria, which can be harmful to humans, has been found to be above the warning level in Hemlington Lake on the outskirts of Middlesbrough, the local council said.

The Environment Agency (EA) has warned the algae can be fatal to animals if ingested and people are being urged not to allow their dogs to enter the water.

According to the EA, areas where there is a bloom will have water that appears less clear and may look green, blue-green or greenish-brown.

A spokesperson for Middlesbrough Council said: "Tests carried out by the Environment Agency on the water at Hemlington Lake have shown that blue/green algae levels are above the warning threshold.

"The high levels make the water potentially toxic to humans and dogs, especially if it's ingested."

The problem can occur during calm weather when several bloom forming species rise to the surface, creating an appearance like paint, mousse or small clumps.