MONTREVEL EN BRESSE Jayat Wastewater Treatment Plant, Auvergne-Rhône-Alpes

MONTREVEL EN BRESSE Jayat is an advanced wastewater treatment plant located in the commune of Jayat, within the Ain department of the Auvergne-Rhône-Alpes region in eastern France. The facility serves a population of approximately 2,840 residents and is situated in a rural setting near the town of Montrevel-en-Bresse. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 6,000 m³/day and an average discharge volume of 506.65 m³/day, the plant operates well below its capacity, indicating room for future growth. As a French facility, it operates under the national regulations transposing the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates appropriate treatment levels for agglomerations of this size. The treated effluent is discharged into local watercourses that ultimately drain into the Rhône River basin. The plant plays a key role in protecting the region's water quality, supporting the ecological health of downstream rivers and the broader Rhône watershed, which flows into the Mediterranean Sea.

The plant discharges into local streams that feed the Rhône River basin, a major European waterway flowing into the Mediterranean Sea. The downstream environment includes sensitive aquatic habitats that support diverse fish species and migratory birds. Advanced treatment helps reduce nutrient loading, protecting water quality in the Rhône and its delta.