Örsundsbro Avreningsverk - Advanced Wastewater Treatment in Örsundsbro, Sweden

Örsundsbro Avreningsverk is a wastewater treatment facility located in Örsundsbro, a locality in Enköping Municipality, Uppsala County, Sweden. The plant provides advanced treatment for municipal wastewater, supporting the local population and industrial activities in the region. The plant has a designed capacity of 4,000 cubic meters per day and employs advanced treatment processes. As a Swedish facility, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires advanced treatment for sensitive areas and agglomerations of certain sizes. Sweden's national regulations align with this directive, ensuring high environmental standards. The treated effluent is discharged into local water bodies that eventually drain into the Baltic Sea. The plant plays a crucial role in protecting the downstream aquatic environment, including the Örsundaån river system and the coastal waters of the Baltic Sea, which are ecologically sensitive and support diverse marine life.

Örsundsbro Avreningsverk discharges treated wastewater into local watercourses that flow into Örsundaån, a river that drains into Lake Mälaren and ultimately the Baltic Sea. The Baltic Sea is a brackish water body with limited water exchange, making it sensitive to nutrient pollution. The plant's advanced treatment helps reduce nutrient loads, protecting the downstream ecosystem and supporting biodiversity in the region.