Overview
PENTHAZAIE wastewater treatment plant serves Gollion, Vaud, Switzerland, with a designed capacity of 1.00 and a population equivalent of 7,650. It operates under Swiss water protection regulations.
PENTHAZAIE is a wastewater treatment plant located in Gollion, within the District of Morges in the canton of Vaud, Switzerland. The facility serves a population equivalent of 7,650 and has a designed capacity of 1.00, indicating it is a small to medium-sized plant typical of Swiss rural agglomerations. Switzerland enforces stringent water protection under the Federal Water Protection Act (GSchG) and the Waters Protection Ordinance (GSchV), which mandate treatment standards based on receiving water sensitivity. For plants of this scale, secondary treatment with nutrient removal is standard, especially in catchments draining to ecologically sensitive water bodies. The plant's treated effluent ultimately flows into the Rhone River basin via local streams, contributing to the broader Lake Geneva and Mediterranean Sea watershed. This region supports diverse aquatic life and is important for regional water quality management.
Environmental context
The plant discharges into local watercourses that feed into the Rhone River system, which drains into Lake Geneva (Lac Léman) and eventually the Mediterranean Sea. The watershed supports sensitive aquatic ecosystems, including fish spawning grounds and migratory corridors, making nutrient removal and effective treatment critical for downstream ecological health.
Frequently asked questions
PENTHAZAIE is located at 1, Chemin de Fleuret, Gollion, in the District of Morges, canton of Vaud, Switzerland.
The plant serves a population equivalent of 7,650, typical of a small to medium-sized Swiss agglomeration.
Treated wastewater from PENTHAZAIE is discharged into local watercourses that drain into the Rhone River basin, eventually reaching Lake Geneva and the Mediterranean Sea.
The plant operates under Switzerland's Federal Water Protection Act (GSchG) and Waters Protection Ordinance (GSchV), which set strict effluent standards for nutrient removal and water quality protection.
For agglomerations of this size, Swiss regulations typically require secondary biological treatment with phosphorus removal, and often nitrogen removal, to protect sensitive receiving waters.
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