Overview
Cazis Waldau wastewater treatment plant serves the Domleschg area in Graubünden, Switzerland. It treats wastewater for approximately 17,372 people under Swiss water protection regulations.
Cazis Waldau is a wastewater treatment plant located in the Domleschg municipality within the canton of Graubünden, Switzerland. The plant serves a population of around 17,372 people, placing it in the medium agglomeration category under Swiss water protection standards. Switzerland enforces stringent wastewater treatment requirements under the Swiss Water Protection Act (Gewässerschutzgesetz). Plants of this scale are typically required to provide at least secondary treatment with nutrient removal to protect sensitive alpine water bodies. The plant's location in the Rhine basin means it must meet high standards to safeguard downstream ecosystems. The treated effluent from Cazis Waldau ultimately discharges into the Rhine River system, which flows through Switzerland, Germany, and the Netherlands before reaching the North Sea. The plant plays a key role in maintaining water quality in the Alpine Rhine region, supporting aquatic life and downstream communities.
Environmental context
The plant discharges into the Rhine River basin, a major European waterway that originates in the Swiss Alps and flows into the North Sea. The local watershed includes sensitive alpine streams that support diverse aquatic species, including brown trout and other cold-water fish. Protecting this ecosystem is critical for maintaining biodiversity and water quality downstream.
Frequently asked questions
Cazis Waldau is located in the Domleschg municipality, in the canton of Graubünden, Switzerland, near the A13 highway.
The plant serves approximately 17,372 people, classifying it as a medium-sized agglomeration under Swiss wastewater regulations.
The treated effluent is discharged into the Rhine River basin, which flows through Switzerland and eventually reaches the North Sea.
The plant operates under the Swiss Water Protection Act (Gewässerschutzgesetz), which mandates advanced treatment for plants in sensitive alpine watersheds.
Swiss plants of this scale typically provide secondary treatment with phosphorus removal to meet strict effluent standards for protecting alpine rivers.
Nearby plants