CAYENNE LES ALYSEES Wastewater Treatment Plant, Remire-Montjoly, French Guiana

CAYENNE LES ALYSEES is a wastewater treatment plant located in Remire-Montjoly, a suburb of Cayenne in French Guiana, an overseas department of France. The plant serves a small population of 440 people and is situated near the coast, reflecting the urban expansion of the Cayenne metropolitan area. The plant provides secondary treatment, which is the standard biological treatment required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. The plant operates well below its capacity, indicating potential for future growth. The treated effluent is discharged into the local watershed, which drains into the Atlantic Ocean. The coastal environment supports diverse marine life, including mangroves and estuaries that serve as nursery habitats for fish and crustaceans. The plant's proximity to the coast underscores the importance of effective treatment to protect marine water quality.

The plant discharges treated wastewater into the coastal waters of French Guiana, part of the Atlantic Ocean basin. The local watershed includes mangrove ecosystems and estuaries that provide critical habitat for aquatic species and act as natural water filters. The coastal zone is ecologically sensitive, supporting biodiversity such as sea turtles and migratory birds. Proper treatment is essential to prevent nutrient enrichment and protect these fragile environments.