Helleneset Wastewater Treatment Plant, Bergen, Norway

Helleneset is a wastewater treatment plant located in the Hellen district of Bergen, Norway, within the Vestland county. It serves a population of approximately 1,420 residents, making it a small-scale municipal facility. The plant operates under Norway's implementation of the EU Urban Waste Water Treatment Directive, which requires secondary treatment for discharges into sensitive areas and coastal waters. The plant provides secondary treatment, which typically involves biological processes to reduce organic matter and suspended solids. With a designed capacity of 1,500 cubic meters per day and an average discharge volume of 615.83 cubic meters per day, the facility operates well within its capacity. Norway's regulatory framework aligns with the EU directive, ensuring that even small plants meet stringent effluent standards to protect the marine environment. The treated wastewater is discharged into the coastal waters of the North Sea near Bergen. This area supports diverse marine life and is important for local fisheries and recreation. The plant's proximity to the coast (within 10 km) means that effluent quality must be carefully managed to prevent nutrient enrichment and protect the sensitive fjord ecosystem.

Helleneset discharges treated wastewater into the coastal waters of the North Sea, specifically within the Byfjorden area near Bergen. This fjord system is part of a larger network of fjords that drain into the Norwegian Sea. The coastal environment supports diverse marine habitats, including kelp forests and fish spawning grounds, and is sensitive to nutrient inputs that could cause algal blooms.