In Poznan, Poland, Eight Clams Get to Decide if People in the City Get Water or Not

Mussels can help marsh growth through accretion.

Mussels can help marsh growth through accretion. Image Pixabay


  • In Poznań, Poland, a project of the European Union , AquaNES, aims to integrate nature-based elements into the Warta River, the city’s main source of water.
  • Mussels will be used to test the water quality because they have a low tolerance for pollutants and will clamp shut as a response to improper water quality.
  • If four of the mussels close at the same time, the system will shut down automatically.

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