Overview
AVENCHES wastewater treatment plant serves the municipality of Avenches in Vaud, Switzerland. It treats wastewater from a population of approximately 5,074 people.
AVENCHES is a wastewater treatment plant located in Avenches, a municipality in the district of Broye-Vully in the canton of Vaud, Switzerland. The plant serves a population of about 5,074 residents, reflecting its role in managing domestic wastewater for a small to medium-sized agglomeration. As a Swiss treatment facility, AVENCHES operates under the national Water Protection Act (GSchG) and the Water Protection Ordinance (GSchV), which align with the EU Urban Waste Water Treatment Directive (91/271/EEC) through bilateral agreements. For agglomerations of this scale, secondary treatment is typically required to reduce organic matter and suspended solids before discharge. The plant discharges treated effluent into local watercourses that eventually drain into the Broye River, a tributary of the Zihlkanal, which flows into Lake Neuchâtel. Lake Neuchâtel is part of the Swiss Plateau's lake system and supports diverse aquatic life, including fish species such as perch and pike. Proper treatment helps protect the lake's water quality and ecological balance.
Environmental context
The treated effluent from AVENCHES enters local streams that flow into the Broye River, which then connects to the Zihlkanal and ultimately reaches Lake Neuchâtel. Lake Neuchâtel is a large, oligotrophic lake on the Swiss Plateau, supporting a variety of fish and bird species. The plant's operations contribute to maintaining the lake's water quality by reducing nutrient loads that could otherwise lead to eutrophication.
Frequently asked questions
AVENCHES is located at Chemin du Bois Carré, Le Russalet, Avenches, in the district of Broye-Vully, canton of Vaud, Switzerland.
The plant serves approximately 5,074 people, making it a small to medium-sized agglomeration in the Swiss wastewater treatment network.
The treated effluent is discharged into local streams that flow into the Broye River, which eventually reaches Lake Neuchâtel via the Zihlkanal.
The plant operates under Switzerland's Water Protection Act (GSchG) and Water Protection Ordinance (GSchV), which require secondary treatment for agglomerations of this size to protect water quality.
For agglomerations of this scale, Swiss regulations typically mandate secondary treatment, including biological processes to remove organic matter and nutrients, ensuring compliance with national water quality standards.
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