HOVEDGARD Wastewater Treatment Plant, Hovedgård, Denmark

HOVEDGARD is a closed wastewater treatment plant located in Hovedgård, a town in the Horsens Municipality of Denmark's Region Midtjylland. The plant was designed with an advanced treatment level and a capacity of 3,900 cubic meters per day, serving the local community before its closure. As a Danish facility, it operated under the European Union's Urban Waste Water Treatment Directive (91/271/EEC), which requires advanced treatment for discharges into sensitive areas. Denmark's implementation of this directive mandates nutrient removal for plants serving agglomerations over 10,000 population equivalent, particularly in coastal zones. The plant's coastal location (within 10 km of the sea) means its treated effluent would have discharged into the Kattegat or nearby water bodies, ultimately reaching the Baltic Sea. The region's watershed supports diverse marine life and is part of a sensitive coastal ecosystem where nutrient management is critical to prevent eutrophication.

The plant is situated in the Horsens area, where drainage flows into the Horsens Fjord and then into the Kattegat, a strait connecting the North Sea and the Baltic Sea. This coastal environment supports important fish spawning grounds and migratory bird populations. Advanced treatment at this facility would have helped reduce nutrient loads, protecting the fjord's water quality and the broader Baltic Sea from eutrophication.