Flat rainwater tanks

Flat tank cisterns for efficient rainwater utilisation

Flat tank cisterns offer an excellent opportunity to store rainwater efficiently and in a space-saving manner. Thanks to their flat design, less excavation is required than with conventional cisterns, which makes installation easier and reduces costs. A shallow tank is often the preferred choice, especially for properties with limited space or difficult ground conditions.

A sustainable investment for everyday use

With a flat tank cistern, you can achieve greater independence from the public water supply. The stored rainwater can be used for a variety of applications, whether for watering the garden or for household use, such as flushing the toilet or washing machine. By using rainwater, you can reduce your drinking water consumption and at the same time help to conserve natural resources.

Although the flat tank cisterns do not ensure complete independence from the public water supply, they do provide considerable relief in terms of water utilisation and offer a reliable reserve during dry periods.

Various filling quantities available from WISY

The flat tanks from WISY are available in various sizes to suit individual requirements. They range from 800 litres to 55,000 litres and offer the option of connecting several tanks together to increase the storage volume. Thanks to the pre-assembled connections and connection sets, installation is quick and easy.

Clever water storage for home and garden

Thanks to the flat design, the tanks can be easily installed even in difficult ground conditions such as rocky ground or high groundwater levels. Less excavation also means less effort during installation, making these cisterns a practical and environmentally friendly solution for private and commercial water utilisation.

Quality and sustainability

WISY's flat tanks are made from high-quality polyethylene (PE), an environmentally friendly and durable material. It is fully recyclable, making it a sustainable choice. Thanks to the seamless production, the tanks are 100% watertight and offer long-term protection against leaks. Even corrosion cannot harm these plastic cisterns.

Innovative design for optimum water utilisation

The innovative design of the flat tank cisterns offered by WISY guarantees high stability and durability. Selected models also offer a guarantee of up to 35 years, which emphasises their quality and reliability. The tanks are easy to install and, thanks to their flat design, are particularly suitable for properties with difficult ground conditions. They are also equipped with pre-assembled connections that simplify the connection and use of the water system. If you want to install the tank in areas with traffic, covers that can be driven over by cars are also available.

With these shallow tanks, you can store rainwater efficiently and use it for various purposes in the household or garden, thereby promoting sustainable water utilisation.