Aurdal renseanlegg - Advanced Wastewater Treatment in Aurdal, Norway

Aurdal renseanlegg is a municipal wastewater treatment facility located in Aurdal, a village in Nord-Aurdal municipality, Innlandet county, Norway. The plant serves a population of about 1,568 people, reflecting its role in managing domestic wastewater for this small community. The plant provides advanced treatment, which goes beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 6,000 m³/day and a current discharge volume of 680 m³/day, the facility operates well below its capacity. Under Norwegian regulations, which align with the EU Urban Waste Water Treatment Directive, advanced treatment is required for sensitive areas to protect water quality. The treated effluent is discharged into the local watershed, which ultimately drains into the Begna River and then into the Tyrifjorden lake system, part of the Drammenselva catchment that flows into the Oslofjord. This downstream environment supports diverse aquatic life and is important for recreation and biodiversity.

The plant discharges into the Begna River basin, which flows into the Tyrifjorden lake and then via the Drammenselva River to the Oslofjord. This watershed supports salmonid populations and other freshwater species, and the fjord ecosystem is sensitive to nutrient loading. Advanced treatment helps minimize eutrophication risks in the downstream lakes and coastal waters.