Press photos

Award for Europe's highest sewage treatment plant

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Sewage sludge is dewatered in filter bags,
and the solid residue is taken down into the valley.
© Eawag

Hohtaelli cableway station (Zermatt/Switzerland), 10,781 feet
above sea level.
© Eawag/terraLink

A complete treatment plant in a confined area: in the bioreactor
(pictured left, and in the foreground of the right-hand photo),
microorganisms are supplied with wastewater and air.
© Eawag/terraLink

Diagram showing the functioning of the plant.
© Eawag