Overview
ARLES MONTCALDE wastewater treatment plant serves approximately 36,000 people in Arles, Provence-Alpes-Côte d'Azur, France. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this
ARLES MONTCALDE is a municipal wastewater treatment plant located in Arles, in the Provence-Alpes-Côte d'Azur region of southern France. The plant serves a population of approximately 35,927 people, classifying it as a medium agglomeration under EU regulations. As a French facility, ARLES MONTCALDE operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations between 10,000 and 150,000 population equivalents discharging into freshwater or estuaries. The plant's treated effluent is discharged into the local watershed, which ultimately drains into the Rhône River, one of Europe's major rivers. The Rhône flows southward through the Camargue delta into the Mediterranean Sea. This region supports diverse aquatic life and important migratory bird habitats, making effective wastewater treatment critical for protecting downstream ecosystems.
Environmental context
ARLES MONTCALDE discharges into the Rhône River basin, which flows through the Camargue wetland delta before reaching the Mediterranean Sea. The Camargue is an ecologically sensitive area supporting diverse bird species, fish, and aquatic plants. Proper treatment helps maintain water quality in this important migratory corridor and coastal ecosystem.
Frequently asked questions
ARLES MONTCALDE is located in Arles, in the Provence-Alpes-Côte d'Azur region of southern France, along the D 36 road.
The plant serves approximately 35,927 people, classifying it as a medium-sized agglomeration under EU regulations.
The treated effluent is discharged into the local watershed, which flows into the Rhône River and eventually reaches the Mediterranean Sea.
As a French plant serving over 10,000 people, ARLES MONTCALDE must comply with the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size discharging into freshwater or estuaries.
Under the EU UWWTD, plants serving between 10,000 and 150,000 population equivalents are typically required to provide secondary treatment (biological treatment) to reduce organic matter and suspended solids.
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