Overview
Sainte-Rose wastewater treatment plant serves 429 people in Sainte-Rose, La Réunion, France. It provides secondary treatment and has a designed capacity of 6,400 m³/day.
The Sainte-Rose wastewater treatment plant is located in Sainte-Rose, a commune on the eastern coast of La Réunion, an overseas department of France in the Indian Ocean. The plant serves a small population of 429 residents, reflecting the rural character of the area. It is situated near the coast but not within 10 km of the shoreline, indicating an inland location. The plant provides secondary treatment, which is the standard required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for discharges into freshwater and estuaries. Although the plant's designed capacity is 6,400 m³/day, the actual discharge volume is 76.53 m³/day, suggesting significant spare capacity. The plant operates under French regulations that transpose EU directives, overseen by the local water agency. The treated effluent is discharged into local watercourses that flow toward the Indian Ocean. La Réunion's eastern watersheds are characterized by steep terrain and high rainfall, supporting diverse ecosystems. The plant's secondary treatment helps protect downstream aquatic life and coastal water quality in this ecologically sensitive island environment.
Environmental context
The plant discharges into streams that drain the eastern slopes of La Réunion, eventually reaching the Indian Ocean. The island's rivers support unique freshwater species and are important for migratory fish. The coastal zone near Sainte-Rose features coral reefs and marine habitats that benefit from controlled nutrient and pollutant loads. Secondary treatment reduces organic matter and suspended solids, mitigating eutrophication risks in the receiving waters.
Frequently asked questions
The plant is located in Sainte-Rose, a commune on the eastern coast of La Réunion, an overseas department of France in the Indian Ocean. The address is Avenue Nelson Mandela, La Cayenne, Le Petit Brûlé, Sainte-Rose.
The plant serves a population of 429 people, reflecting the small, rural community of Sainte-Rose.
The plant provides secondary treatment, which typically involves biological processes to remove organic matter and suspended solids. This level of treatment is standard for discharges into freshwater and coastal waters under EU regulations.
The plant discharges into local streams that flow toward the Indian Ocean. These watercourses support freshwater ecosystems and eventually reach the coastal marine environment near Sainte-Rose.
As a French facility, the plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), transposed into French law. For small agglomerations like Sainte-Rose (under 2,000 population equivalent), the directive requires appropriate treatment, typically secondary, to protect receiving waters.
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