Pulp-mill waste is very noxious for the primary wood production. The problems of its manageability are correlated with its volume and a considerable degree of pollutions, mainly the organic ones, coming from wood processing. The other main components of waste material are aggressive reagents liberating the cellulose fibers, during washing, classification and the benediction processes. The results of environmental studies covering the superficial water of the pulp-mill impact were presented. The production process factors were assessed owing to the waste concentration and distribution in the water race.