Le Pre d Aniere Wastewater Treatment Plant, Loire-Authion, France

Le Pre d Aniere is a wastewater treatment plant located in the commune of Loire-Authion, within the Maine-et-Loire department of the Pays de la Loire region in western France. The facility serves a population of approximately 4,560 residents and is situated near the Authion River, a tributary of the Loire River. The plant employs advanced treatment processes, which go beyond the secondary treatment standards required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 4,080 m³/day and an average daily discharge volume of 813.5 m³, the plant operates well below its capacity, indicating room for future growth or seasonal variations. The treated effluent is discharged into the local water system, ultimately contributing to the Loire River basin. The Loire is France's longest river and a vital ecological corridor, supporting diverse aquatic life and migratory fish species. The plant's advanced treatment helps protect water quality in this sensitive watershed.

The plant discharges into the Authion River, a tributary of the Loire River, which flows into the Atlantic Ocean. The Loire basin is ecologically significant, supporting diverse aquatic habitats and migratory species such as Atlantic salmon and European eel. Advanced treatment at this plant helps reduce nutrient loads and protect downstream water quality in this important river system.