WALD Wastewater Treatment Plant, Wald (ZH), Switzerland

WALD wastewater treatment plant is located in Wald (ZH), in the canton of Zürich, Switzerland. The facility serves a population of approximately 8,599 and has a designed capacity of 1.00, indicating its scale as a small to medium agglomeration. The plant is situated near the coast, which influences its discharge considerations. As a Swiss wastewater treatment facility, WALD operates under the Swiss Water Protection Act (Gewässerschutzgesetz), which mandates stringent treatment standards to protect water quality. For agglomerations of this size, secondary treatment with nutrient removal is typically required, especially in sensitive areas. The plant's coastal proximity may necessitate additional measures to prevent marine eutrophication. The treated effluent from WALD is discharged into local water bodies that eventually drain into the Rhine River basin and ultimately the North Sea. The plant plays a crucial role in safeguarding the ecological health of the surrounding watershed, supporting aquatic life and downstream water quality in the Zürich region.

WALD treatment plant discharges into local streams that feed into the Rhine River basin, which flows through Switzerland, Germany, and the Netherlands before reaching the North Sea. The coastal location within 10 km of the sea means the effluent can directly impact marine ecosystems, requiring careful management of nutrients to prevent algal blooms and protect biodiversity in the North Sea.