Overview
AMBRIERES CIGNE is a secondary treatment plant serving 160 people in Ambrières-les-Vallées, Pays de la Loire, France. It discharges 28.54 m³/day of treated wastewater into local waterways.
AMBRIERES CIGNE is a municipal wastewater treatment plant located in Ambrières-les-Vallées, in the Mayenne department of Pays de la Loire, France. It serves a small population of 160 residents, reflecting its role in a rural community. The plant is situated near the town of Cigné, within the Loire River basin. The plant provides secondary treatment, which is the standard biological treatment required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 225 m³/day and an actual discharge volume of 28.54 m³/day, the plant operates well below its capacity, indicating room for future growth or seasonal variations. The facility is part of France's national wastewater infrastructure, regulated by the French Ministry of Ecology and local water agencies. Treated effluent from the plant flows into local streams that eventually drain into the Mayenne River, a tributary of the Loire River. The Loire is one of France's longest rivers, supporting diverse aquatic ecosystems and providing water for agriculture and recreation. The plant's secondary treatment helps protect downstream water quality in this sensitive river basin.
Environmental context
The plant discharges into small watercourses that feed the Mayenne River, part of the Loire River basin. The Loire is a major European river known for its biodiversity, including migratory fish species such as Atlantic salmon and European eel. Secondary treatment reduces organic pollutants and suspended solids, helping to maintain the ecological health of the downstream river system.
Frequently asked questions
The plant is located in Ambrières-les-Vallées, in the Mayenne department of Pays de la Loire, France. Its address is Route le Bois aux Moines, La Val, Cigné.
The plant serves a population of 160 people, making it a small-scale facility for a rural community.
The plant discharges treated effluent into local streams that flow into the Mayenne River, a tributary of the Loire River.
The plant provides secondary treatment, which is the standard biological treatment required by the EU Urban Waste Water Treatment Directive for small agglomerations.
The plant operates under the EU Urban Waste Water Treatment Directive, transposed into French law. For its size (160 people), secondary treatment is the minimum requirement, ensuring compliance with national water quality standards.
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