MEYRARGUES Wastewater Treatment Plant, Meyrargues, Provence-Alpes-Côte d'Azur

The MEYRARGUES wastewater treatment plant is located in Meyrargues, a commune in the Bouches-du-Rhône department of Provence-Alpes-Côte d'Azur, France. It serves a population of approximately 2,338 residents and operates with secondary treatment, which is the standard for small agglomerations under the EU Urban Waste Water Treatment Directive (91/271/EEC). The plant has a designed capacity of 3,000 m³/day and currently treats an average daily flow of 417 m³/day. As a secondary treatment facility, the plant provides biological treatment to reduce organic matter and suspended solids. For agglomerations under 10,000 population equivalent, the EU directive requires secondary treatment, which this plant meets. The plant's capacity utilization is low, indicating ample headroom for future growth or seasonal variations. The treated effluent is discharged into the local watershed, which ultimately drains into the Mediterranean Sea via the Durance River and the Rhône River. The plant plays a key role in protecting the water quality of these downstream water bodies, supporting aquatic life and preventing eutrophication in the coastal zone.

The plant discharges into the Durance River basin, a tributary of the Rhône River, which flows into the Mediterranean Sea. The Durance is a major river in southeastern France, supporting diverse aquatic ecosystems and agricultural irrigation. The plant's secondary treatment helps reduce nutrient loads, protecting downstream water quality and the sensitive coastal environment of the Camargue delta.