Disentis_Muster Disla Wastewater Treatment Plant, Disentis/Mustér, Graubünden

Disentis_Muster Disla wastewater treatment plant serves the small community of Disentis/Mustér in the Surselva region of Graubünden, Switzerland. The plant provides secondary treatment for a population of 214, with a designed capacity of 500 m³/day and an average discharge volume of 97.14 m³/day. As a Swiss plant, it operates under the Swiss Water Protection Act (Gewässerschutzgesetz), which mandates secondary treatment for settlements of this size. The plant's secondary treatment process ensures effective removal of organic matter and nutrients before discharge. The treated effluent is discharged into local waterways that drain into the Rhine River basin, eventually reaching the North Sea. The plant plays a key role in protecting the sensitive alpine aquatic environment of the Surselva valley.

The plant discharges into the local watershed of the Surselva region, which feeds into the Vorderrhein (Anterior Rhine), a headwater of the Rhine River. The Rhine flows through Switzerland, Germany, and the Netherlands before reaching the North Sea. The alpine streams in this area support diverse aquatic life, including brown trout and other cold-water species, and are ecologically sensitive due to their pristine nature and role in regional biodiversity.