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ACO Passavant Detego

Rendering-schwammstadt-loesung-ACO

ACO sponge city

NEW: ACO sponge city road drain

The modular design of the well-established ACO Combipoint road gully system is now enhanced with components tailored for Schwammstadt (sponge city) applications. Proven benefits such as impermeability, height adjustability, and lightweight construction remain key features of the system.

With this technical advancement, ACO has developed an innovative solution that can be flexibly adapted to the specific requirements of Schwammstadt projects—supporting urban greenery by efficiently supplying it with rainwater.

How it works


Summer operation

Irrigation through near-surface discharge of rainwater into the sponge city body

Winter operation

Discharge of saline water into the sewer system (open gate valve)

The sponge city road drain modular system


Application area for walkways/cycle paths and roof surfaces

Product advantages:

  • Individual parts for modular design
  • Compact, integrable Schwammstadt system components
  • Load-decoupled thanks to telescopic principle without mortar joint
  • Watertight up to 0.5 bar
  • Rotatable
  • Lightweight components
  • Modular system analogous to DIN 4052
  • Can be tilted up to 8 % for longitudinal and transverse inclination
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Outlet box set for vehicle traffic areas

Product advantages:

  • Coordinated sponge city shaft system
  • Surface discharge of rainwater from parking and traffic areas
  • Complete set consisting of shaft system, outlet box & installation aid
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Attachments and accessories

Product advantages:

  • Sponge city attachment in console & channel form
  • Class D 400
  • Suitable for installation in streets, parking areas and pedestrian zones
  • Special sponge city leaf motif with "sponge city" lettering
  • Attachments suitable for the use of dirt traps
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