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Rainwater harvesting for house and garden

With rainwater harvesting, a productive source is available in many areas of the world, providing you with free water of excellent quality. The water can be used for garden irrigation, cleaning, flushing toilets, and more. 

For over 25 years and in well over 30,000 rainwater harvesting systems, our customers are now collecting the valuable rainwater. We offer an optimal range of filters, plastic and concrete cisterns, pumping and control devices, accessories and complete systems.


Garden irrigation

What could be more natural than to water the plants and shrubs in the garden with rainwater. To bridge the dry periods in the summer.

  • Simple retrofitting
  • Saving drinking water and waste water charges
  • Rapid amortisation possible 
  • Supply stability
  • Soft water for optimal plant growth
  • Cooling through evaporation in the garden




Rainwater as process water

Do you want to supply your toilet and washing machine with treated rainwater in addition to watering your garden?

  • Ideal for new construction or renovation projects
  • Saves water consumption by approx. 50%
  • Saving of drinking water fees
  • Use: WC, washing machine, cleaning & garden 
  • Limescale-free water
  • Reduced detergent consumption




Potable water production

When it comes to drinking water, no standard can be high enough, with our AQUALOOP technology, the water can also be further treated to drinking water quality

  • Water self-sufficient
  • < 100% water saving  
  • Savings on drinking water charges
  • Simple retrofitting
  • Limescale-free water


Rainwater harvesting pays off

Whether a rainwater harvesting system is economically viable depends on many factors. These include precipitation patterns, the available catchment areas, drinking water and wastewater prices, whether the system is new or retrofitted, what the rainwater is used for, and much more. If you can retrofit a simple rainwater system for garden use yourself, such an investment can quickly pay for itself. For irrigation, only rainwater should be used anyway because of the low salt content. Often, however, it is also a matter of enabling a certain independence and security of supply for the future with one's own rainwater harvesting system. In remote areas, rainwater is sometimes even the only source of water.


Do you have any questions or are you interested in a non-binding offer?
We are looking forward to your contact.

Here you will find brochures, instructions, technical drawings and much more.

You can find a detailed technical article on the subject of "Saving water, making a contribution to saving the climate and earning money at the same time" here.

Dimensioning of INTEWA products

Planning sheets for different applications

Rainplaner software