Kirchensittenbach Wastewater Treatment Plant, Unterkrumbach, Bavaria

Kirchensittenbach wastewater treatment plant is located in Unterkrumbach, a district of Kirchensittenbach in the Landkreis Nürnberger Land, Bavaria, Germany. The plant serves a population of 2,000 and operates with secondary treatment, meeting the standard requirements for small agglomerations under German and EU regulations. The plant has a designed capacity of 1,500 m³/day and currently discharges 506.15 m³/day of treated wastewater. As a secondary treatment facility, it provides biological treatment to reduce organic matter and suspended solids, complying with the EU Urban Waste Water Treatment Directive (91/271/EEC) which mandates secondary treatment for agglomerations of this size. The treated effluent is discharged into local watercourses that eventually drain into the Pegnitz River, a tributary of the Regnitz, which flows into the Main and ultimately the Rhine River. The plant plays a key role in protecting the local watershed and downstream aquatic ecosystems from nutrient pollution.

The plant's discharge enters small streams in the Pegnitz River basin, which flows through the Franconian Jura region. The Pegnitz joins the Regnitz, then the Main, and finally the Rhine, one of Europe's major rivers. The local watershed supports diverse aquatic life and is part of a sensitive karst landscape where groundwater protection is critical. Proper treatment helps prevent eutrophication and maintains water quality for downstream communities and ecosystems.