ANDERMATT Wastewater Treatment Plant, Andermatt, Uri, Switzerland

The ANDERMATT wastewater treatment plant is located in the village of Andermatt, in the canton of Uri, Switzerland. It serves a population of about 4,772 residents, typical of a small alpine community. The plant is situated in the Reuss River valley, a key waterway in central Switzerland. Switzerland enforces strict water protection under the Federal Water Protection Act (Gewässerschutzgesetz), which requires all wastewater treatment plants to meet high standards. For a plant of this scale, secondary treatment with nutrient removal is standard, ensuring compliance with Swiss ordinances on wastewater discharge. The treated effluent is discharged into the Reuss River, which flows north through Uri and into Lake Lucerne, eventually joining the Aare River and then the Rhine. This alpine watershed supports sensitive aquatic ecosystems, including trout and other cold-water species, making effective treatment critical for downstream water quality.

The plant discharges into the Reuss River, a major tributary of the Rhine system. The Reuss originates in the Gotthard massif and flows through the Urner Alps before reaching Lake Lucerne. This alpine watershed supports diverse aquatic life, including brown trout and grayling, and is a key corridor for migratory fish. The region's steep terrain and seasonal snowmelt create variable flow conditions, requiring robust treatment to protect downstream habitats.