Optimize your rainwater and wastewater management with the Set of 6 Filtration Tunnels (300 L) , the ultimate eco-friendly solution for drainage systems in septic tanks and wastewater treatment plants. Designed with state-of-the-art retention and infiltration technology, this complete system is designed to offer superior performance, maximum durability, and efficient installation in residential or industrial projects.

Why choose the Set of 6 Infiltration Tunnels for Septic Tanks?

This sustainable drainage system offers significant advantages over traditional gravel ditches, drastically reducing the need for excavation and heavy machinery. Each tunnel provides a storage capacity of 300 liters, allowing the system to achieve high infiltration rates in a compact space. Thanks to its modular design, treated water from your septic tank or wastewater treatment plant is distributed evenly across the ground, preventing waterlogging and meeting the most stringent environmental regulations.

Main Features

• High storage capacity: 300 liters per tunnel, totaling 1800 liters of infiltration capacity in this set of 6 units.


• Complete kit ready to install: Includes the 6 filtration tunnels, the corresponding end caps and the geotextile mesh necessary to prevent the entry of sediments.


• Modular and lightweight design: The modules fit together quickly and easily, facilitating adaptation to the geometry of any terrain.


• Superior resistance: Made of high-density plastic materials, they withstand high road traffic loads if installed at the appropriate depth.


• Sustainability and ecology: They promote the natural recharge of underground aquifers and reduce the visual and landscape impact of the work.


• Product reference: GA91800.

Frequently Asked Questions

What exactly does this filtration tunnel set include?

The kit includes 6 infiltration tunnels of 300 liters each, the necessary lids to close the ends of the system and the geotextile mesh that wraps the assembly to protect it from the soil and ensure clean and long-lasting drainage.

Is it suitable for installation under vehicle traffic areas?

Yes, these drainage tunnels have high structural strength. They can be installed under areas where cars and heavy vehicles circulate, provided that the ground cover heights and the technical installation guidelines are respected.

How is the drainage system maintained?

Because they are protected by the included geotextile mesh, the entry of solid particles into the tunnel is minimal. The system requires very little maintenance; however, periodic inspection of the upstream sump is recommended to ensure that the water is free of grease and suspended solids.

Why is it better than a traditional gravel trench?

Infiltration tunnels offer three times the water storage capacity of a conventional gravel trench (which typically retains only 30% of its volume in voids). This translates into much smaller excavations, lower aggregate transport costs, and a longer lifespan for the wastewater treatment system.