Overview
Fornet Dessous secondary treatment plant serves Petit-Val, Switzerland, with a designed capacity of 420 m³/day and a population equivalent of 500.
Fornet Dessous is a wastewater treatment plant located in Petit-Val, within the Bern/Jura bernois region of Switzerland. It serves a small community of approximately 500 people, reflecting the rural character of the area. The plant is situated in the Jura mountains, an ecologically sensitive region with numerous streams and forests. The plant provides secondary treatment, which is the standard biological treatment required under Swiss regulations for small agglomerations. With a designed capacity of 420 m³/day and an average discharge volume of 226.96 m³/day, the plant operates well within its capacity. Swiss wastewater treatment is governed by the Federal Waters Protection Act, which mandates stringent effluent standards to protect water quality. The treated effluent is discharged into local watercourses that ultimately drain into the Rhine River basin. The Jura bernois region is known for its karst topography, where groundwater and surface water are closely interconnected, making proper wastewater treatment essential for protecting drinking water sources and aquatic ecosystems.
Environmental context
The plant discharges into small streams in the Jura bernois region, which flow into the Birs River and eventually the Rhine. This watershed supports diverse aquatic life and provides drinking water for downstream communities. The karst geology makes the area sensitive to pollution, as groundwater can be rapidly contaminated. Proper treatment helps maintain the ecological integrity of these water bodies.
Frequently asked questions
Fornet Dessous is located in Petit-Val, in the Bern/Jura bernois region of Switzerland, at coordinates 47.281 N, 7.174 E.
The plant serves a population equivalent of approximately 500 people, typical of a small rural community in the Swiss Jura.
The treated effluent is discharged into local streams that flow into the Birs River, a tributary of the Rhine, eventually reaching the North Sea.
Swiss wastewater treatment is regulated under the Federal Waters Protection Act, which requires secondary treatment for small agglomerations and sets strict effluent limits to protect water quality.
For small agglomerations like Fornet Dessous, secondary biological treatment is standard, often using activated sludge or biofiltration, with nutrient removal where required to protect sensitive waters.
Nearby plants