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In January 2017, HOLINGER was commissioned by the Office for Waste, Water, Energy and Air (AWEL) of the Canton of Zurich to revise the hazard maps in three municipalities. A working group revised the flood hazard maps and created...


In the context of the General Drainage Plan (GDP) of the wastewater association for the Laufental-Lüsseltal region, HOLINGER is constructing a mixed water basin in the parish garden of the Herz-Jesu church in Laufen. The...


The right bank of the Aare river near Kiesen-Jaberg is in poor condition. Two significant infrastructure facilities, a drinking water pipeline and the A6 motorway, are situated in the area behind the existing bank protection....


On 8 May 2019, an official ground-breaking ceremony was held to celebrate the second ozonation facility in Baden-Württemberg. Over the next two years, the fourth treatment stage for the protection of the Neckar river will be...


The Finkenaue, a road in Olbernhau near Dresden, had to be renovated along a 240 m section. The project included work on the drainage systems and the replacement of a culvert over the Rungstockbach stream. The new construction...


The banks of the Aare river in Olten, Trimbach and Winznau, had been eroded and washed out in places and needed securing. Wooden casings made of tree trunks and rocks now support the river banks. The root systems of newly planted...


The Mendrisiotto region needs a comprehensive water supply solution. Since 2005, the Cantonal Water Supply Planning Department (PCAI), has been planning a lake water plant in Riva San Vitale, from where water from Lake Lugano...


In view of the plans to refurbish or renovate the Pestalozzi school, HOLINGER Luzern investigated the building structure and tested the indoor air. The main focus was asbestos, formaldehyde, naphthalene and polycyclic aromatic...


The groundbreaking ceremony for the renovation and extension of the WWTP Basel was held on 23rd  January 2019. It marked the start of the largest and arguably most important sewage treatment plant project in Europe. By 2024,...