The Carat XXL Underground Rainwater Tank is a cutting-edge solution offered by GRAF for large-scale rainwater harvesting in commercial, industrial, and municipal projects. The tank is constructed from durable, corrosion-resistant plastic, ensuring a long service life of over 50 years. Its modular design allows for capacities of up to 122,000 liters, with the flexibility to connect multiple tanks for increased storage capacity.

The unique twin-wall construction of the Carat XXL tank provides exceptional structural stability, enabling installation beneath driveways, parking areas, and green spaces without compromising performance. GRAF's system seamlessly integrates with filtration units, pump systems, and control technology to deliver clean, non-potable water for various applications such as irrigation, toilet flushing, process use, and fire suppression.

Furthermore, the lightweight nature and straightforward assembly of the Carat XXL tank reduce installation time and costs compared to traditional concrete alternatives. By promoting sustainability, this solution aids in reducing municipal water consumption, managing stormwater runoff, and ensuring compliance with environmental regulations. It is particularly beneficial for green building projects seeking to enhance water efficiency while ensuring long-term reliability and performance.

Key Characteristics

• Versatile system sizes: Available in both underground and above-ground formats for residential, garden, and commercial use.

• Modular and easy to install: Systems typically include a tank, filter package, pump, and control unit for seamless integration.

• Efficient filtering: Self-cleaning filters achieve high water yield, while garden packages use basket filters for maximum collection.

• Floating extraction: Pumps draw water from just below the surface, where it is cleanest.

• Access and durability: Telescopic, rotatable tank shafts with covers suitable for pedestrian or vehicle loading.

• Automated backup supply: Automatically switches to mains water when the tank is empty.

Environmental Benefits

• Significant drinking water savings: Reduces the need for potable water by supplying rainwater for toilets, washing machines, gardening, and more.

• Flood and runoff mitigation: Decreases surface runoff, reducing pressure on drainage systems and lowering flood risks.

• Eco-friendly water for plants: Naturally soft and chemical-free, reducing detergent use and benefiting gardens and irrigation.

• Less strain on treatment infrastructure: Lowers demand on wastewater systems and helps preserve groundwater resources.