Rainwater Harvest Tanks

Cantex underground rainwater harvesting systems from GRAF are make ecological and economic sense. Up to 50 % of drinking water can be saved, preserving groundwater reserves and taking the strain off wastewater treatment systems. The flat Platin tank with a volume of 1,500 l or more is easy to install yourself. The large Carat XXL tank with a volume of up to 122,000 l can handle a large rainwater requirement. GRAF complete packages provide everything you need for professional rainwater harvesting. For use in the garden or home, suitable for pedestrian or vehicle loading - everything is possible!

Cantex offers both under the ground and above the ground rain water harvesting tanks . The Cantex underground rainwater harvesting systems are ecologically compatible and economical. Up to 50 % of drinking water can be saved, preserving groundwater reserves and taking the strain off wastewater treatment systems. Our low volume systems of 1500 L are simple to install and requires least external assistance. However, tanks with a volume capacity of up to 122,000 L handles large rain water requirement. We deliver a complete package to suit your professional rainwater harvesting. The Cantex above ground rainwater tanks are designed for a long life using special materials to ensure a long-lasting attractive appearance. The tank material is 95 % recyclable and is therefore good for the environment. These tanks are supplied together with suitable assembly accessories.

The Cantex Edge

Reduced Water Bills

High-quality water, less dependence on wells, easy maintenance.

Ecological benefit

minimizes the impacts of flooding by funneling, reduces load placed upon drainage systems

Erosion and Flood Control

Prevents soil erosion and flood hazards around buildings.

Irrigation Purpose

Provides chemical-free water, supports large-scale collection, mitigates drought effects.

Saves Ground Water

Reduces demand for potable water and groundwater use.

Stormwater Harvest Tanks

The Cantex Storm water Infiltration tanks are one of the most preferred methods of stormwater management, when downstream discharge facilities are not present, or post development runoff volume is limited. The Cantex Infiltration Tank Modules are wrapped in needle punched non-woven geotextile and buried in porous permeable soil base. The Infiltration systems help to recharge groundwater aquifers and provide moisture for the surrounding vegetation. The Cantex Infiltration systems are recognized by the international stormwater best management practice.

The Cantex Tank Module system is far more efficient and durable than any traditional gravel and pipe-based systems. The system provides a void space ratio of over 95% compared to 30% in typical gravel and pipe-based systems. Consequently, the Cantex system offers a smaller footprint for the same storage volume, significantly saving the amount of excavation, soil transport, importing clean aggregate and thus reducing earthworks related installation costs, and causes minimum site disruption.

The Cantex Edge

Enhanced Handling

Handles excess water over longer periods to improve stormwater management efficiency.

Dual-Purpose Use

Suitable for both stormwater and grey water effluent management.

Cost Effective Installation

Large installations are completed quickly by a small team, reducing labor costs.

Maintenance and Inspection

Offers excellent access, self-cleaning at low flows, and simplifies regular upkeep.

Saves Ground Water

Increases soil water levels, groundwater flow rates, and reduces stormwater flow velocities.