- Lake Mälaren has a long history with problems concerning algal blooms and eutrophication. There are just over three million people living around Lake Mälaren and they are using it for swimming and recreation. It is also the lake we take most drinking water from and it is also a problem for the water treatment plant with algal blooms, says Ingrid Hägermark at the Lake Mälaren's Society for Water Conservation.

Read the article and watch the interview/demonstration (in Swedish)
Satelliter varnar om algblomning i Mälaren

Figure: In the movie clip Ingrid Hägermark at the Lake Mälaren's Society for Water Conservation explains how the service works. Photo: SVT.

Algae blooms in Lake Mälaren are now measured with new technology. Anyone who wants to can check the situation at their bathing site with the CyanoAlert app in their mobile phone. Nine municipalities and water conservation societies around Lake Mälaren are participating...

Watch the interview (in Swedish)
Upptäck fräschaste badplatsen - med hjälp av satellitbilder

Figure: Screenshot from the interview (by Expressen, a Swedish national newspaper) with Ingrid Hägermark at the Lake Mälaren's Society for Water Conservation.

As of this summer, satellites will be used to assess the risk of algal blooms in Lake Mälaren. Anyone who wants to can check the situation at their bathing site with the CyanoAlert app in their mobile phone.
- This is because we have major problems with algal blooms, says Ingrid Hägermark at the Lake Mälaren's Society for Water Conservation.

Read the article and listen to the interview (in Swedish)
Satelliter hjälper dig hitta fräschaste badplatsen

Figure: A processed satellite image of Lake Mälaren (Sweden) showing chlorophyll/algaee in the water. Blue represents low levels and red higher levels. Photo: © Copernicus data (2020), processing: CyanoAlert®.

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