Pont Salomon Sivu de l'Alliance Wastewater Treatment Plant, Saint-Ferréol-d'Auroure, France

Pont Salomon Sivu de l'Alliance is an advanced wastewater treatment plant located in Saint-Ferréol-d'Auroure, within the Haute-Loire department of Auvergne-Rhône-Alpes, France. The facility serves a population of 2,561 and has a designed capacity of 3,300 cubic meters per day, with an average discharge volume of 456.88 cubic meters per day. As an advanced treatment plant, it goes beyond secondary treatment to remove nutrients and other pollutants, aligning with the requirements of the EU Urban Waste Water Treatment Directive (91/271/EEC) for sensitive areas. The plant operates under French national regulations, which implement the directive and mandate appropriate treatment levels based on the receiving environment. The plant discharges treated wastewater into the local river system, which ultimately drains into the Loire River basin. The Loire is France's longest river and supports diverse aquatic ecosystems, including migratory fish species. The advanced treatment helps protect water quality in this ecologically significant watershed.

The plant discharges into the local watershed, which is part of the Loire River basin. The Loire River flows through central France before emptying into the Atlantic Ocean. The basin supports diverse aquatic life, including Atlantic salmon and European eel, and is an important ecological corridor. Advanced treatment at this plant helps reduce nutrient loading and protect downstream water quality.