ELNE2 Wastewater Treatment Plant, Alénya, Occitanie, France

ELNE2 is a wastewater treatment plant located in Alénya, a commune in the Pyrénées-Orientales department of Occitanie, southern France. The plant serves a population of approximately 12,955, placing it in the medium agglomeration category under EU classification. As a French facility, ELNE2 operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size. France implements this directive through national regulations, and plants serving over 10,000 population equivalents are subject to stringent monitoring and reporting requirements. The plant's location near the Mediterranean coast may also subject it to additional nutrient removal standards if the receiving area is designated as sensitive. The plant's treated effluent likely discharges into a water body that ultimately drains into the Mediterranean Sea, given its proximity to the coast (within 50 km). The local watershed includes coastal rivers and lagoons that support diverse aquatic life and are important for regional biodiversity. Proper treatment at ELNE2 helps protect these downstream ecosystems from nutrient pollution and other contaminants.

ELNE2 is situated in the Pyrénées-Orientales region, where water bodies flow toward the Mediterranean Sea. The plant's discharge likely enters a coastal river or lagoon system, eventually reaching the Gulf of Lion. This area supports ecologically sensitive habitats, including seagrass meadows and coastal wetlands that provide nursery grounds for fish and migratory bird routes. Nutrient loading from wastewater can lead to eutrophication in these environments, making effective treatment critical for maintaining water quality and biodiversity.