Jungholz Wastewater Treatment Plant, Wertach, Bavaria

The Jungholz wastewater treatment plant is located in Wertach, a municipality in the Oberallgäu district of Bavaria, Germany. Serving a population of 416, this facility is part of the region's decentralized wastewater infrastructure, typical for small alpine communities in southern Germany. The plant provides advanced treatment, which goes beyond the secondary treatment required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations under 2,000 population equivalent. Advanced treatment typically includes nutrient removal (nitrogen and phosphorus) to protect sensitive receiving waters. The plant's designed capacity of 3,200 m³/day suggests it can handle peak flows from tourism or storm events common in the Alpine region. The treated effluent is discharged into local watercourses that feed into the Wertach River, a tributary of the Lech River, which ultimately flows into the Danube River and then the Black Sea. This connection to the Danube basin places the plant within a major European watershed, where nutrient management is critical to prevent eutrophication in downstream ecosystems.

The plant discharges into small streams that drain into the Wertach River, a tributary of the Lech River. The Lech flows into the Danube, which empties into the Black Sea. The surrounding Alpine watershed supports sensitive aquatic habitats, including cold-water fish species. Advanced treatment helps minimize nutrient loading, protecting downstream water quality in the Danube basin.