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ACO Sponge City concepts based on the Stockholm system

The sponge city principle of the Stockholm system describes an innovative construction method that creates an optimal habitat for large-crowned urban trees, while providing retention space for rainwater. The Stockholm system provides a large volume of root space for the tree to use without damaging the infrastructure above. Stockholm, where this construction method was developed over 20 years ago, has played a pioneering role.



Christopher Peiritsch

“As Confucius said: ‘Take care of the roots - then the branches and leaves can take care of themselves‘!”

Christopher Peiritsch
ACO Green City Expert, ACO Austria

ACO Sponge City Road Drain

With the new Sponge City road drain, ACO, as an expert in stormwater management, offers an effective and easy-to-implement solution for the blue-green transformation of cities. The proven ACO Combipoint street drain system has been extended to include selected Sponge City components, so that rainwater can be fed into the Sponge City body close to the surface for effective irrigation of urban greenery.

  • Preventing heavy rain with permeable sponge urban structures
  • Salt free irrigation solution with simple summer/winter operation

Other relevant products in the ACO Sponge City modular system

ACO Multiline Seal in is the channel that comes with a seal at the joint as standard. In addition to ACO polymer concrete, the captive 2K seal is an essential component of the Seal in technology. With a wide range of designer gratings, there are no limits to design freedom.

ACO DRAIN® Multiline Seal in

The combination of sedimentation and a substrate filter stage forms the basis for cleaning surface water. The ACO Stormclean removes filterable substances as well as heavy metals and light liquids and can be used prior to infiltration or discharge into water bodies.

ACO Stormwater Management

As an infiltration system, ACO Stormbrixx promotes the natural water cycle. Pre-cleaned stormwater is collected in the block trench. It gradually seeps into the ground, helping to recharge the groundwater. The trench is lined with a waterproofing membrane and is suitable for retention.

ACO Stormbrixx