Aarhus Protects Itself against Monster Rain through a Network of Underground Wastewater Basins

City of Aarhus

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Arhus is Denmark’s 2nd largest city and the  financial centre of the Central Denmark Region. The city has a catchment area of 1.2 million people within a one-hour travel range and is well connected to Copenhagen and Hamburg.

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At times of cloudbursts and large amounts of rainwater, municipalities are responsible for ensuring the disposal of wastewater and rainwater. The City of Aarhus has the detailed knowledge of roads, sewers, water courses and soil conditions that is necessary in order to find sustainable solutions.

The basin forms part of an overall basin network with the capacity to handle a total of 66,000 cubic metres of water. 40 million Euros have been allocated to the implementation of this project.

The actual operation of wastewater management is handled by ‘Aarhus Water’. This utility company has recently invested more than 7 million Euros in a new wastewater basin, which is to serve as a storage space for up to 15,000 cubic metres of rain and wastewater.

The wastewater basin is located underground in Carl Blochs Gade in central Aarhus, and it is 65 metres long, 30 metres wide and 12 metres deep. The basin is one of the measures applied in the efforts to deal with the consequences of climate change, e.g. monster rain.

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City of Aarhus
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Stine Sparrewath
+45 8947 1010


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