The production of paper requires a large amount of water. The water we use is collected from the River Meuse. The waste water resulting from paper production is purified on our premises. This process involves a two-tier installation capable of both anaerobic and aerobic water purification. In 1983, the anaerobic biological purification process became a world premier event and was entirely developed within the Roermond facilities. This methodology has by now been adapted worldwide by all paper producers and food related industries.

The methane gas that is released in the purification process contributes almost 5% to the generation of the total necessary steam production.

At the end of 2000, a new reactor for the anaerobic part of the waste water purification installation was introduced. This made possible a higher water circulation speed in the mill and in the coming years will contribute to a further reduction in the consumption of surface water.
In 2006 the capacity of the purification plant was enlarged again with yet another anaerobic reactor, in order to reach a future higher re-use of purified water and to reduce the fresh water intake.