Overview
UWWTP Onderdendam serves approximately 11,474 people in Groningen, Netherlands. The plant operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this scale.
UWWTP Onderdendam is a municipal wastewater treatment plant located in Onderdendam, a village in the municipality of Het Hogeland, Groningen province, Netherlands. The plant serves a population equivalent of around 11,474, placing it in the medium agglomeration category under EU regulations. As a Dutch wastewater facility, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations between 10,000 and 150,000 population equivalent discharging into inland waters. The plant's designed capacity is 1.00 (likely in thousands of cubic meters per day or similar unit), indicating a facility sized for its service population. The treated effluent from UWWTP Onderdendam is discharged into local waterways that drain into the Wadden Sea, a shallow coastal sea known for its rich biodiversity and importance as a migratory bird habitat. The plant plays a key role in protecting the water quality of the region's canals and ditches, which are part of the extensive Dutch water management system.
Environmental context
UWWTP Onderdendam discharges into the local canal network of the Groningen province, which ultimately drains into the Wadden Sea via the Lauwersmeer and the Wadden Sea coast. The Wadden Sea is an ecologically sensitive intertidal zone that supports diverse aquatic life, including seals, migratory birds, and fish species. The plant's treatment performance is critical to maintaining nutrient and pollutant levels within acceptable limits for this downstream ecosystem.
Frequently asked questions
UWWTP Onderdendam is located at Bedumerweg 68 in Onderdendam, a village in the municipality of Het Hogeland, Groningen province, Netherlands.
The plant serves approximately 11,474 people, classifying it as a medium-sized agglomeration under EU wastewater treatment regulations.
The treated effluent is discharged into the local canal network of Groningen, which flows into the Lauwersmeer and eventually the Wadden Sea.
As a Dutch plant serving over 10,000 people, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for discharges to inland waters.
Under the EU UWWTD, plants serving between 10,000 and 150,000 population equivalent must provide at least secondary treatment. In sensitive areas, tertiary treatment may be required.
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