Irsental Wastewater Treatment Plant, Daleiden, Rheinland-Pfalz, Germany

The Irsental wastewater treatment plant is located in Daleiden, a municipality in the Eifelkreis Bitburg-Prüm district of Rheinland-Pfalz, Germany. It serves a population of approximately 2,460 people, classifying it as a small agglomeration under the EU Urban Waste Water Treatment Directive (UWWTD). The plant is situated in the rural Eifel region, characterized by low population density and agricultural land use. As a secondary treatment facility, Irsental provides biological treatment to remove organic matter and suspended solids. The plant has a designed capacity of 2,600 m³/day and currently treats an average daily flow of 862.64 m³/day, indicating spare capacity. Under the EU UWWTD, secondary treatment is the minimum standard for freshwater discharges from agglomerations of this size, ensuring compliance with European water quality standards. The treated effluent is discharged into local watercourses that drain into the Prüm River, a tributary of the Sauer River, which eventually flows into the Moselle and then the Rhine. The Rhine basin is a major European watershed supporting diverse aquatic life and providing drinking water for millions. The plant's operation helps protect downstream ecosystems from nutrient pollution and organic loading.

The Irsental plant discharges into small streams that feed the Prüm River, part of the Moselle-Saar-Rhine system. This watershed ultimately drains into the North Sea via the Rhine Delta. The region's aquatic ecosystems support species such as brown trout and European eel, and the plant's secondary treatment reduces organic pollution and nutrient loads, helping to maintain water quality in this ecologically sensitive area.