WISY AG Germany has its company headquarters in Hitzkirchen, a small town surrounded by meadows and forest within the boundaries of the Vogelsberg nature recreation area in Hesse, Germany. The company was founded in 1989 by Norbert Winkler (WISY – Winkler Systems), who laid the foundation for the emergence of rainwater harvesting by inventing and patenting the filter collector with the unique filtration technique.
Throughout his lifetime, Norbert Winkler had a deep passion and interest in environmental protection. Driven by this passion, WISY became not only a manufacturer of innovative rainwater harvesting products but also one of the pioneer and industry leaders of the rainwater harvesting industry in Germany and Europe.
Why are WISY filters so unique? Because the filtration concept relies on a vertical filter mesh which ensures efficient cleaning and collection of rainwater. Due to its outstanding design and construction, it operates easily and cannot be blocked at any time. Beside the filter collector system, WISY provides also a large range of system components for rainwater harvesting systems of varying size and areas of applications.
Ever since, the company has undergone tremendous growth and transformation continuously and has strengthened the position as the leading manufacturer of high quality rainwater harvesting products and accessories in the world with an extensive network in over 40 countries.
WISY´s products have consequently found use in many thousands of projects around the worlds, especially where professional rainwater harvesting solutions are required. It is in public buildings in particular - schools, hospitals, and fire stations, for example - that WISY products can guarantee a reliable rainwater supply. Private home owners appreciate the ease of use and the extremely low maintenance requirements of WISY´s system.
In addition to manufacturing high-quality products, the company has always understood the importance of product-specific training. In an in-house training centre, more than 10,000 installers and distributors have since received instruction in the fundamental principles of rainwater harvesting.
Over the years, WISY has contributed tremendously towards the formulation of the German and European Guidelines for the promotion and implementation of rainwater harvesting systems which has provided an impetus for the rapid adoption of rainwater harvesting systems as an integral part of housing design across Germany and Europe. Moreover, the company is a founding member of the German Rainwater Association FBR and also participated in the DIN committees which drew up the currently applicable standards.