Emmerting Mehring Wastewater Treatment Plant, Unteremmerting, Bavaria

Emmerting Mehring is an advanced wastewater treatment plant located in Unteremmerting, a district of Emmerting in the Altötting district of Bavaria, Germany. The plant serves a population of approximately 4,668 residents and is part of the municipal wastewater infrastructure for the region. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 7,000 m³/day and an actual discharge volume of 738.30 m³/day, the plant operates well within its capacity. As a German facility, it complies with the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates advanced treatment for sensitive areas. The treated effluent is discharged into local water bodies that ultimately drain into the Danube River basin. The plant plays a key role in protecting the water quality of the region's streams and rivers, supporting aquatic ecosystems and downstream water uses.

The plant discharges into local streams that flow into the Alz River, a tributary of the Inn River, which joins the Danube near Passau. The Danube then flows into the Black Sea. The region's watershed supports diverse aquatic life, including fish species such as brown trout and grayling. Advanced treatment helps reduce nutrient loads, preventing eutrophication in downstream waters.