The Set of 10 300L Filtration Tunnels (Reference: GA93000) represents the definitive, efficient, and environmentally friendly solution for rainwater management and drainage, as well as wastewater treatment. Specifically designed to optimize drainage systems in septic tanks and wastewater treatment plants, this advanced system effectively replaces traditional gravel trenches, offering a very high infiltration capacity and extremely easy installation.

Why choose an infiltration tunnel system for your land?

This complete system is designed to suit residential or commercial projects requiring high performance. Thanks to its innovative modular design, each 300-liter tunnel offers three times the water storage capacity of a conventional gravel-filled drainage pipe. This translates into a drastic reduction in the required excavation volume, significant savings in transportation costs, and minimal environmental impact on the site.

The tunnel structure can withstand heavy road traffic loads once installed at the correct depth, ensuring exceptional durability over the years without risk of subsidence. Furthermore, the set includes all the essential components for quick and watertight assembly, guaranteeing that the system operates at peak performance from day one and protecting the surrounding terrain from saturation or flooding.

Main Features

• Unit capacity of 300 liters per tunnel, optimizing space and retention volume.


• Complete set including 10 infiltration tunnels, corresponding covers and high-strength geotextile mesh.


• Made with virgin high-density plastic materials, highly resistant to corrosion and chemical agents in the soil.


• Modular and lightweight design that allows for quick assembly without the need for specialized heavy machinery.


• Suitable to withstand road traffic, allowing its installation under passageways or parking areas.


• Ecological system that promotes the natural infiltration of water into the aquifer in a controlled manner.

Frequently Asked Questions

What exactly does the GA93000 Set include?

The package comes fully equipped for immediate installation. It includes ten 300-liter filtration tunnels, end caps, and the necessary geotextile mesh rolls to enclose the system and prevent sediment and soil from entering.

Is this drainage system difficult to install?

No, the installation is considerably faster and cleaner than traditional gravel systems. The modules are lightweight and assemble intuitively. All that's required is excavating to the appropriate dimensions, leveling the bottom, laying the geotextile mesh, assembling the tunnels, placing the covers, and covering the entire structure according to the technical guidelines.

Can it be installed under a vehicle traffic area?

Yes, the tunnels are structurally designed to withstand road traffic loads (cars and vans), provided that the earth load height specified in the installation manual is respected to ensure uniform weight distribution.

What is the geotextile mesh included in the set for?

The geotextile mesh acts as a crucial filter barrier. It allows water to flow freely into the tunnel and infiltrate the ground, but prevents fine soil and sand particles from penetrating the system, thus avoiding sedimentation and premature clogging of the tunnels.