Aker Stord I Eldoyane Wastewater Treatment Plant, Leirvik, Norway

Aker Stord I Eldoyane is a municipal wastewater treatment plant located in the Eldoyane industrial area of Leirvik, on the island of Stord in Vestland county, Norway. The plant serves a small population of 150 people, reflecting its role in a localized community within the broader Stord municipality. The plant provides secondary treatment, which is the standard biological treatment stage required under Norwegian regulations aligned with the EU Urban Waste Water Treatment Directive (91/271/EEC). Although the designed capacity is 1000 m³/day, the current discharge volume is 65.05 m³/day, indicating the plant operates well below its capacity. Norway's regulatory framework mandates secondary treatment for all discharges from agglomerations, with more stringent requirements for sensitive areas. The treated effluent is discharged into the coastal waters of the North Sea near Stord. The surrounding marine environment supports diverse aquatic life and is part of the larger Norwegian coastal ecosystem. The plant's proximity to the coast (within 10 km) means its discharge directly influences local fjord and marine water quality.

The plant discharges into the coastal waters of the North Sea near Stord island, part of the Hardangerfjord region. This area supports diverse marine life, including fish, crustaceans, and seabirds, and is influenced by tidal exchanges with the North Sea. The local watershed drains from the island's hills into the fjord, making the treatment plant's effluent a point source for nutrients and pollutants that can affect coastal water quality and benthic habitats.