Overview
Pontarlier wastewater treatment plant serves approximately 61,000 people in Doubs, France. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this scale.
The Pontarlier wastewater treatment plant is located in Doubs, within the Bourgogne-Franche-Comté region of eastern France. It serves a population of approximately 61,000, classifying it as a medium-sized agglomeration under EU regulations. The plant is situated near the city of Pontarlier, close to the Swiss border. As a facility serving over 10,000 people, it falls under the requirements of the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for all discharges from agglomerations of this size. French wastewater plants typically operate under national regulations that implement the directive, with permits issued by local authorities. The plant discharges into the local watershed, which ultimately drains into the Doubs River, a tributary of the Saône, then the Rhône, and finally the Mediterranean Sea. The Doubs River supports diverse aquatic life and is an important ecological corridor in the Jura region. The plant's operations help protect downstream water quality in this sensitive river system.
Environmental context
The plant discharges into the Doubs River, which flows into the Saône River, then the Rhône River, and ultimately the Mediterranean Sea. The Doubs River is a key waterway in the Jura region, supporting diverse aquatic ecosystems and serving as a migratory corridor for fish species. The plant's treatment processes help maintain water quality in this ecologically sensitive watershed.
Frequently asked questions
The Pontarlier wastewater treatment plant is located in Doubs, within the Bourgogne-Franche-Comté region of eastern France, near the city of Pontarlier and close to the Swiss border.
The plant serves approximately 61,000 people, classifying it as a medium-sized agglomeration under EU regulations.
The plant discharges treated wastewater into the local watershed, which flows into the Doubs River, a tributary of the Saône and Rhône rivers, eventually reaching the Mediterranean Sea.
As a French plant serving over 10,000 people, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for such agglomerations. National regulations implement the directive, with permits issued by local authorities.
For agglomerations of this size, the EU Urban Waste Water Treatment Directive mandates secondary treatment (biological treatment) as a minimum. In sensitive areas, tertiary treatment may be required to remove nutrients like nitrogen and phosphorus.
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