Aker Stord II Kjotteinstaa Wastewater Treatment Plant, Vestland, Norway

Aker Stord II Kjotteinstaa is a wastewater treatment plant located in the Eldøyane industrial area on Stord island, Vestland county, Norway. The plant serves a population of approximately 1,000 people and operates with secondary treatment, which is the standard for smaller agglomerations under Norwegian regulations aligned with the EU Urban Waste Water Treatment Directive. The plant has a designed capacity of 1,750 cubic meters per day and currently discharges 433.68 megaliters of treated wastewater annually. As a coastal facility within 10 km of the sea, it must meet stringent discharge standards to protect the marine environment. Norwegian regulations require secondary treatment for all inland plants, with additional nutrient removal for sensitive coastal areas. The treated effluent is discharged into the coastal waters of the North Sea near Stord. This area supports diverse marine life, including fish stocks and seabird populations. The plant plays a key role in maintaining water quality in the surrounding fjords and coastal ecosystems, which are important for local fisheries and tourism.

The plant discharges into the coastal waters of the North Sea near Stord island in Vestland. The receiving environment is a fjord system that supports diverse marine life, including cod, herring, and seabird colonies. As a coastal discharge within 10 km of the shore, the plant must comply with strict nutrient and pathogen limits to prevent eutrophication and protect bathing water quality. The North Sea is a semi-enclosed sea with limited water exchange, making it sensitive to nutrient loading from coastal discharges.