GEH Wasserchemie GmbH is the inventor and manufacturer of granular ferric hydroxide (GEH®) for water treatment. The unique “black granulate” is the basis of our business existence. And it is far more than that for many people. It is the fundamental element that provides them with clean drinking water, the primary ingredient essential for life.

Since our company was founded in 1997, we have been a world leading provider of iron-based adsorbents. We manufacture our products at our company headquarters in Osnabrück, Germany, and deliver worldwide. Thanks to our long-term international partnerships, we can guarantee an optimum on-site service, as well as being present for our customers across the globe.

Developed for the removal of arsenic in drinking water treatment, GEH® is now also used in many other applications. These include the treatment of mineral water, rainwater, surface water and waste water. In addition to arsenic, other impurities like vanadium, phosphate, uranium, copper, zinc and others can be removed.