swedish experience and excellence in wastewater treatment

swedish experience and excellence in wastewater treatment
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  • Does Sweden have a wastewater treatment plant?
  • Copper, lead, mercury and zinc have all increased since 2018. This information is based on statistics from wastewater tre-atment plants designed for more than 20,000 popula-tion equivalents. These wastewater treatment plants process nearly 80 per cent of Sweden’s wastewater (Swedish EPA and Statistics Sweden, 2025).
  • When was wastewater treated in Sweden?
  • The Swedish Environmental Protection Agency (Swedish EPA) was established in 1967; and a year later, national funding for wastewater treatment was introduced to decontaminate municipal waste water and the Environmental Protection Act came into force in 1969 (Bernes and Lundgren, 2009). EXPANSION OF WASTEWATER TREATMENT IN THE 1970S
  • How much sewage is treated in Sweden?
  • Over 97 per cent of urban wastewater undergoes both biological and chemical treatment. Many larger industrial and mining facilities have their own wastewater treat ment plants (Swedish EPA and Statistics Sweden, 2025). There are also approximately a million households in Sweden that do not have municipal water and sewage services.
  • How are discharges presented in Swedish wastewater treatment plants?
  • Discharges are presented according to treatment method, the dimension of the treatment plant and the recipient marine basin. The degree of removal at Swedish wastewater treatment plants nowadays is high for nutri-ents and is gradually improving.