Environmental Agency warns of dangerous blue-green algae in Cumbria's lakes

Public is urged to report dangerous Blue-Green Algae sightings in Cumbria.
There have been reports of algal blooms in lakes across Cumbria. Credit: The Environmental Agency

The Environmental Agency is urging people to report potential sightings of dangerous blue-green algae in Cumbrian Lakes.

It comes after reports of the algae blooming in Coniston, Windermere and other lakes in the county.


What is blue-green algae and why should you report it?

  • Blue Green Algae is a group of bacteria known as ‘cyanobacteria’.

  • It's more common in warm and dry weather.

  • However, it can also come about in periods where there is heavy rain.

  • The algae poses a small risk to human health if a person comes into direct contact with the water (e.g. while swimming). 

  • But, it can pose a serious risk to animals such as dogs if they drink or swim in the affected water.


Follow advice from landowners if an algal bloom is suspected. Credit: The Environmental Agency

Environment Manager at the Environment Agency Jim Ratcliffe said: ''Blue green algae can cause stomach pains, vomiting, diarrhoea, and skin rashes though the risk to people is normally very low as they are unlikely to swallow much contaminated water.

The Blooming’ Algae app will help people to report and record potential sightings of blue-green algae.

It works by allowing you to take a picture of the algae at a specific location - it should help speed the process for warning members of the public and helps manage risks  in the area.

Report possible blue green algae to the Bloomin’ Algae app. Credit: The Environmental Agency

Professor Laurence Carvalho of the UK Centre for Ecology & Hydrology said: “The public can play a crucial role in providing a rapid, early warning to pet owners about outbreaks of blue-green algae.”

“If people report sightings via the Bloomin’ Algae app with a photograph, we can quickly check if it is blue-green algae or something harmless, with correct and incorrect reports plotted on an interactive map in the app.”

Bloomin' Algae app users can set up notifications for confirmed blooms in their area.