Innovation also takes place underground in the tech city of Eindhoven. A stone wool water-buffer system provides a sustainable solution to the flooding in the inner city.
This is the situation
The situation in Eindhoven is comparable to that in many Dutch (inner) cities:
- Due to the changing climate, heavy peak showers mean that the sewer system is increasingly unable to carry away the water, resulting in flooding;
- the city is highly compacted. Hard road surfaces are on the increase and the number of inhabitants, businesses and connections to the sewer system is increasing rapidly;
- Since 2019, it is mandatory to integrate water storage into new projects in the private area in Eindhoven. An additional provision must be made for the collection and retention of up to 75 mm of rainwater within the planning area (an increase compared to the water policy prior to 2019);
- According to current policy, a minimum of 25 mm and a maximum of 75 mm of water storage must be achieved for all new hard surfaces. The following applies: the greener the plan, the lower the specification in millimetres.