Bad Kotzting Wastewater Treatment Plant, Steinbach, Bavaria

The Bad Kotzting wastewater treatment plant is located in Steinbach, a district of Bad Kötzting in the Bavarian region of Germany. It serves a population of approximately 12,568 people, classifying it as a medium-sized agglomeration under EU regulations. The plant is situated inland, away from coastal areas, and discharges into local water bodies. As a German facility, the plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for agglomerations of this size. Germany implements this directive through national legislation, ensuring compliance with stringent effluent standards. Typical plants of this scale employ biological treatment with nutrient removal to meet regulatory requirements. The treated effluent is discharged into the local watershed, which ultimately drains into the Danube River basin via the Regen River. The Danube is a major European waterway that flows into the Black Sea. The plant plays a crucial role in protecting the water quality of the Regen River and downstream ecosystems, supporting aquatic life and recreational uses.

The plant discharges into the Regen River, a tributary of the Danube, which flows through Bavaria and into the Black Sea. The Regen River supports diverse aquatic life, including fish species such as brown trout and grayling. The plant's treatment helps maintain water quality in this ecologically sensitive river system, which is important for regional biodiversity and downstream communities.