Hohenfels Wastewater Treatment Plant, Markstetten, Bayern, Germany

The Hohenfels wastewater treatment plant is located in Markstetten, a district of Hohenfels in the Landkreis Neumarkt in der Oberpfalz, Bayern, Germany. The plant served a population of approximately 2,000 people before its closure. As a small-scale facility, it was part of Germany's decentralized wastewater infrastructure for rural communities. Although the plant is now closed, German wastewater treatment regulations under the EU Urban Waste Water Treatment Directive (91/271/EEC) require that agglomerations of this size (under 10,000 population equivalent) receive appropriate treatment to protect receiving waters. Typically, such plants employ secondary treatment or equivalent technologies to meet national standards. The plant's discharge would have flowed into local streams within the Danube basin, eventually reaching the Black Sea. The surrounding region is characterized by mixed agricultural and forested landscapes, with sensitive aquatic ecosystems that benefit from proper wastewater management.

The Hohenfels plant is located inland in the Upper Palatinate region of Bavaria, within the Danube River basin. Treated effluent would have entered small tributaries that feed into the Danube, which ultimately drains into the Black Sea. The local watershed supports diverse aquatic life and is part of a larger ecological network important for migratory fish and water quality.