Save drinking water and protect the environment. The complete solutions from ROTAVER.
Every year, up to 3000 litres of rainwater fall per square metre in Switzerland. However, most of this water remains unused. In the future, it will become increasingly important to use the available resources sparingly. Therefore, even if we currently have sufficient reserves, we should treat drinking water with care. Rainwater can be used as a cost-effective alternative for all applications that do not require drinking water quality. For example, for flushing toilets, watering gardens, washing clothes, washing cars and hosing down stables.
The use of soft rainwater offers even more advantages: Due to the low degree of hardness, less limescale residue is formed, which is particularly desirable for washing cars and in toilets. This means that aggressive limescale removers and cleaning agents can be largely dispensed with, which also benefits the environment. This is why environmentally conscious homeowners, architects, administrators and entrepreneurs are increasingly turning to the use of rainwater.
We offer attractive complete solutions for your rainwater system. You can choose from the following two models, with different options for water extraction. We will be happy to help you make the right choice.
Join in and take the opportunity to ensure that the annual consumption of 98,000 litres of drinking water per person does not end up dry. ROTA's commitmentVER The rainwater harvesting concept has proven itself both ecologically and economically.
Technical data water tank
Useful water or rainwater ground storage tank - Spherical tanks 4'000 to 14'000 litres up to max. 800mm overlap
Useful water or rainwater ground storage tank - Spherical tanks 4'000 to 14'000 litres min. 800mm to max. 1200mm overlap (heavy version)
Useful water or rainwater ground storage tank - Cylinder tanks 15'000 to *200'000 litres up to max. 800mm overlap (cannot be driven over)
Rainwater Calculator (German)
Download our rainwater calculator and dimension your rainwater system.
If you are interested in a quote, please send the completed rainwater calculator together with your contact details to
A quotation with price list for RWT compact systems in the garden as well as further information can be found in the following PDF documents.