Clean water is a valuable asset. More than two-thirds of our "Blue Planet" is indeed covered by water, but only 2.5 % is fresh water, which is fast disappearing. Only 60 % of the world’s population is constantly supplied with fresh drinking water. The shortage of water not only affects countries in the southern hemisphere but many other countries too, especially during the summer months.
The awareness of the value of water has increased worldwide. It can be witnessed in the escalating cost of drinking water supply and sewage water discharge worldwide.  The total demand for fresh water has also increased and our natural sources will be unable to compensate in the long run. It is clear that new sources of water must be developed.

In the famous tale from Greek mythology, the God Poseidon wanted to gift something to the people of Attica. He thrust his trident into the rock (on which the Acropolis stands today) and from it gushed a spring of water which was said shall never run dry. But the people, not having the vision or regard for the huge benefit that this inexhaustible source offered, did not like his gift!

Today however, we understand what it means to have our water sources run dry. It is happening in many countries now and therefore we are looking for durable and sustainable solutions that meet the specific needs of consumers.

Our company vision is to enable consumers to better use the resources of rainwater and grey water, rather than fresh drinking water, in domestic and commercial applications, and channel excess rain water back into groundwater reservoirs in an effort to increase the world’s supply of drinking water. 


Our products contribute to resource-friendly, sensible handling and use of water. Moreover, we have set up a sustainable economic system within our company. Of course, Green Electricity is obligatory for us.


We have set trends in the rain water and grey water sectors with our products. We have been inspired by nature in the development of our patented self-cleaning hydraulic jump filter PURAIN. Our RAINMASTER ECO unit has increased energy efficiency by 40% utilizing our new pumping technology.


We maintain the highest quality and standards of our products and systems with certifications from independent inspection authorities, careful supervision of suppliers and separate quality assurance procedures. As proof of INTEWA’s product quality, we offer a 2 year INTEWA warranty for numerous products - at no additional charge.

Expert knowledge

As pioneers of Rainwater technology, we have been in the market since 1993. Since the beginning both development and planning have been our priorities.   Over the years, expert knowledge and competence has been supplied by our qualified employees, for a large number of developments and projects. We appreciate the exchange of experience in the association (fbr Professional Association for Rainwater harvesting and our wide network of customers, universities and colleges, planners, installers, traders and business partners. This trustful exchange is of mutual benefit and ensures that we are "on the ball"  - always ready to come up with new innovative ideas.

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Wassermann Poseidon

The possibility to save drinking water has enhanced strongly the last years.

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A rainwater filter cleaning itself by the principle of the hydraulic jump.

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The DRAINMAX tunnel infiltration system: The only plastic trench with flushable  ground.

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The optimized water pump station for rainwater and greywater utilization in every planned construction.

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Tel. +49 (0)241/96605-0

E-Mail: info@​intewa.​de

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