UWWTP OLST_WIJHE OLST - Municipal Wastewater Treatment Plant in Den Nul, Overijssel

UWWTP OLST_WIJHE OLST is a municipal wastewater treatment facility located in Den Nul, within the municipality of Olst-Wijhe in the province of Overijssel, Netherlands. The plant serves a population of approximately 24,750 people, classifying it as a medium-sized agglomeration under European Union regulations. As a Dutch wastewater treatment plant, it operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment for agglomerations of this size. Dutch plants typically employ advanced treatment technologies to meet stringent national water quality standards. The treated effluent from the plant is discharged into the local water system, which ultimately drains into the IJssel River, a distributary of the Rhine. The IJssel flows northward through Overijssel and empties into the IJsselmeer, a large freshwater lake. This water body supports diverse aquatic life and is important for regional water management and recreation.

The plant discharges into the local water network that feeds the IJssel River, a major branch of the Rhine delta. The IJssel flows through the lowland landscape of Overijssel and empties into the IJsselmeer, a large freshwater lake created by the Afsluitdijk. The IJsselmeer is an ecologically sensitive area that supports migratory fish, waterfowl, and aquatic vegetation. Nutrient loading from wastewater can contribute to eutrophication, so effective treatment is critical for maintaining water quality in this downstream lake system.