Schonberg Wastewater Treatment Plant, Schönberg, Schleswig-Holstein

The Schonberg wastewater treatment plant is located in Schönberg, a municipality in the district of Herzogtum Lauenburg, Schleswig-Holstein, Germany. It served a small population of 1,811 people before its closure. The plant is situated inland, away from coastal areas, and its operations have ceased. The plant provided advanced treatment, which is a high level of purification beyond secondary treatment, typically involving nutrient removal or disinfection. Although the plant is closed, its design capacity was 1,700 cubic meters per day, and it discharged a volume of 458.32 cubic meters per day. Under the EU Urban Waste Water Treatment Directive, small agglomerations like this are generally required to have appropriate treatment, and advanced treatment indicates compliance with sensitive area standards. It likely drains into local streams or rivers within the Elbe basin, which flows into the North Sea. The surrounding region is characterized by agricultural and rural landscapes, and the plant's advanced treatment helped protect local water quality and downstream ecosystems.

The plant is located inland in Schleswig-Holstein, a region with numerous small rivers and streams that feed into the Elbe River. The Elbe ultimately discharges into the North Sea, a sensitive marine environment. The advanced treatment at this plant would have reduced nutrient loads, protecting downstream aquatic habitats and supporting biodiversity in the Elbe estuary and North Sea.