ESTERNAY Wastewater Treatment Plant, Esternay, Grand Est, France

ESTERNAY is a wastewater treatment plant located in Esternay, a commune in the Marne department of the Grand Est region, France. The plant serves a population of approximately 3,833 people and has a designed capacity of 2,650 cubic meters per day, with a current discharge volume of 683.80 cubic meters per day. As an advanced treatment facility, ESTERNAY goes beyond secondary treatment to remove nutrients and other pollutants, ensuring high-quality effluent. This level of treatment is typical for plants in sensitive areas under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires tertiary treatment for agglomerations discharging into sensitive catchments. The treated effluent from ESTERNAY is discharged into the local watershed, which ultimately drains into the Seine River basin. The Seine flows through the Paris region and into the English Channel, supporting diverse aquatic ecosystems and providing water for agriculture and industry. Advanced treatment helps protect downstream water quality and ecological health.

ESTERNAY's treated effluent enters the local watercourse, part of the Seine River basin. The Seine flows northwest through the Paris Basin and into the English Channel, supporting a variety of aquatic life and serving as a critical water resource. The Grand Est region's chalky soils and agricultural land use mean that nutrient removal is important to prevent eutrophication in downstream rivers and coastal zones.