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The manufacturing industry includes a variety of different sub-sectors, including food and beverages, textiles, chemicals, pulp and paper, iron and steel. The above sub-sectors need to use water for cooling purposes, processing activities, washing and cleaning of facilities and equipment, and water that is integrated into products. However, the returned cooling water can cause problems with thermal pollution and hypoxia. Furthermore, industrial discharges can be highly contaminated and then require appropriate treatment before discharge. In the case of washing and cleaning water consumption can be considered low to negligible, but discharged water may need treatment because of its nutrient and organic content (EEA, 2018b).