ARTHON EN RETZ, Chaumes-en-Retz

Overview

ARTHON EN RETZ wastewater treatment plant serves Chaumes-en-Retz in Pays de la Loire, France. It provides secondary treatment for a population of 2,016 and discharges treated effluent near the Atlantic coast.

The ARTHON EN RETZ wastewater treatment plant is located in Arthon-en-Retz, part of the commune Chaumes-en-Retz in the Loire-Atlantique department of Pays de la Loire, France. It serves a population of approximately 2,016 people, classifying it as a small agglomeration under French and EU regulations. The plant operates with secondary treatment, which is the standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for discharges into coastal waters. The plant has a designed capacity of 2,900 cubic meters per day and currently treats an average daily volume of about 360 cubic meters, indicating ample reserve capacity. Situated within 10 km of the Atlantic coast, the plant's treated effluent ultimately reaches the Bay of Biscay. The local watershed includes small coastal rivers and estuaries that support diverse aquatic life. Proper treatment is essential to protect the marine environment and comply with EU directives for sensitive coastal areas.

Environmental context

The plant discharges into a coastal watershed that drains into the Bay of Biscay, part of the Atlantic Ocean. The nearby Loire estuary and coastal zones are ecologically sensitive, supporting migratory fish species and diverse marine habitats. Secondary treatment helps reduce nutrient loads and organic pollution, protecting water quality in this important coastal region.

Frequently asked questions

The plant is located at D 751, La Boizonnière, Arthon-en-Retz, in the commune of Chaumes-en-Retz, Loire-Atlantique, Pays de la Loire, France.

The plant serves approximately 2,016 people, making it a small agglomeration under EU classification.

The plant discharges treated effluent into the local coastal watershed, which flows into the Bay of Biscay in the Atlantic Ocean. It is located within 10 km of the coast.

The plant provides secondary treatment, which is the minimum required by the EU Urban Waste Water Treatment Directive for discharges into coastal waters.

As a French plant serving a small agglomeration, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for all discharges and additional nutrient removal in sensitive areas.