As the town of Feldkirch has adequate quantities of retention Volume in its network of channels, the use of the HydrOstyx ® procedure makes it possible to reduce the costs associated with expensive rain basins for mixed water treatment purposes. With the specific arrangement of storage cascades in the main collector, an adequate channel volume is activated to optimally reduce the spillway quantities into the outfall ditches (Nafla and Ehbach)

At a cost of €900.000 for the HydrOstyx ® equipment, it will be possible to save €1.500.000 in Feldkirch alone.