The process water is cleaned from soil particles as it enters the mills. It is recirculated and recycled many times inside the factories. Finally the water is cleaned in several stages before it is released to the Baltic- and Irish seas.
The conditions in the environmental permits regarding type of wastewater treatment are based on the unique water conditions in the vicinity of each mill. Holmen Iggesund continuously monitors the status of recipient aquatic environments in close co-operation with local environmental authorities.