Andebu sentrum renseanlegg - Wastewater Treatment Plant in Andebu, Norway

Andebu sentrum renseanlegg is a wastewater treatment plant located in Andebu, a village in Sandefjord municipality, Vestfold county, Norway. The plant serves a population of approximately 2,362 people, making it a small-scale facility within the Norwegian wastewater infrastructure. As a Norwegian plant, it operates under national regulations that implement the EU Urban Waste Water Treatment Directive (91/271/EEC) through the EEA Agreement. For agglomerations of this size (under 10,000 population equivalent), the directive requires appropriate treatment, typically secondary treatment or equivalent, to protect receiving waters. The plant's treated effluent is discharged into the local watershed, which ultimately drains into the Oslofjord via rivers and streams in the Vestfold region. The Oslofjord is an ecologically important marine environment that supports diverse aquatic life and is a key recreational area for southern Norway.

The plant discharges into the local water system that flows into the Oslofjord, a major fjord on the Skagerrak strait. The Oslofjord is a sensitive marine environment that supports diverse fish populations, including cod and herring, and serves as an important migratory corridor for seabirds. Proper treatment is essential to prevent nutrient loading and protect the fjord's ecological balance.