Overview
The Notre Dame de Gravenchon wastewater treatment plant serves Port-Jérôme-sur-Seine, France, with a designed capacity of 1.00. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of t
The Notre Dame de Gravenchon wastewater treatment plant is located in Port-Jérôme-sur-Seine, in the Normandy region of France. It serves a population of approximately 40,700 people, classifying it as a medium agglomeration under EU regulations. As a French facility, the plant operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment for agglomerations with a population equivalent (PE) between 10,000 and 150,000. For sensitive areas, tertiary treatment may be mandated. The plant's compliance with these standards ensures effective removal of organic matter and nutrients before discharge. The treated wastewater is discharged into the Seine River basin, which flows through Normandy and eventually into the English Channel. The Seine estuary is an ecologically important area, supporting diverse aquatic life and serving as a migratory corridor for fish species. The plant's operations help protect this downstream environment from pollution.
Environmental context
The plant discharges into the Seine River basin, which flows through Normandy and empties into the English Channel. The Seine estuary is a critical habitat for fish and bird species, including migratory populations. The plant's treatment processes help maintain water quality in this ecologically sensitive area, reducing nutrient loads that could cause eutrophication in coastal waters.
Frequently asked questions
The plant is located in Port-Jérôme-sur-Seine, in the Normandy region of France, along the Seine River.
The plant serves approximately 40,700 people, classifying it as a medium-sized agglomeration under EU regulations.
The treated wastewater is discharged into the Seine River basin, which flows into the English Channel.
The plant operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment for agglomerations of this size.
Under the EU directive, plants serving 40,000 people typically require secondary treatment (biological treatment) to remove organic matter, and may need tertiary treatment if discharging into sensitive areas.
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