Overview
Saint-Saëns wastewater treatment plant in Normandie, France serves 1,800 people with advanced treatment. It discharges 321.12 m³/day and has a designed capacity of 3,000 m³/day.
The Saint-Saëns wastewater treatment plant is located in the commune of Saint-Saëns, within the Seine-Maritime department of Normandie, France. It serves a population of approximately 1,800 residents and is situated in the ZI des Aulnaies industrial zone. The plant operates under French regulations that transpose the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires appropriate treatment for small agglomerations. The facility employs advanced treatment processes, ensuring a high level of pollutant removal before discharge. With a designed capacity of 3,000 m³/day and an average daily flow of 321.12 m³, the plant operates well below its capacity, indicating room for future growth or seasonal variations. The advanced treatment level exceeds the EU minimum of secondary treatment for this population size, reflecting a commitment to environmental protection. The treated effluent is discharged into local watercourses that ultimately drain into the English Channel via the Seine River basin. The plant's location more than 10 km from the coast reduces direct marine impact, but its proximity to the Seine estuary and the Channel means that nutrient removal is important for preventing eutrophication in downstream coastal waters. The advanced treatment helps safeguard the ecological health of the regional watershed.
Environmental context
The plant discharges into local streams that feed into the Seine River, which flows through the Paris Basin and empties into the English Channel at Le Havre. The Seine estuary is an ecologically sensitive area supporting diverse aquatic life, including migratory fish species. The advanced treatment at Saint-Saëns helps reduce nutrient loads that could contribute to algal blooms in the coastal zone, protecting the marine ecosystem of the Channel.
Frequently asked questions
The plant is located in the ZI des Aulnaies industrial zone in Saint-Saëns, Seine-Maritime, Normandie, France.
The plant serves approximately 1,800 residents of Saint-Saëns and surrounding areas.
The plant uses advanced treatment processes, which provide a higher level of purification than secondary treatment, reducing nutrients and other pollutants before discharge.
The plant operates under French national regulations implementing the EU Urban Waste Water Treatment Directive (91/271/EEC), which sets standards for collection, treatment, and discharge.
The plant protects local watercourses in the Seine basin from pollution, reducing nutrient loads that could harm the English Channel ecosystem.
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