Overview
Ruelisheim wastewater treatment plant serves approximately 47,000 people in Grand Est, France. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this scale.
The Ruelisheim wastewater treatment plant is located in Ruelisheim, a commune in the Haut-Rhin department of the Grand Est region, France. Serving an estimated population of 47,000, the plant is part of the municipal wastewater infrastructure for the Mulhouse area. The facility is situated near the Ill River, a tributary of the Rhine, and plays a key role in protecting local water quality. As a plant serving a medium-sized agglomeration, it falls under the EU Urban Waste Water Treatment Directive 91/271/EEC. This directive requires secondary treatment for discharges into freshwater and estuaries, with more stringent tertiary treatment in sensitive areas. The Grand Est region includes sensitive zones under the directive, which may influence the plant's treatment requirements. The treated effluent from Ruelisheim is discharged into the Ill River, which flows into the Rhine River and ultimately reaches the North Sea. The Rhine basin is a major European waterway supporting diverse aquatic ecosystems and providing drinking water for millions. Proper treatment at Ruelisheim helps reduce nutrient and pollutant loads, contributing to the ecological health of the Rhine and its downstream environments.
Environmental context
The plant discharges into the Ill River, a tributary of the Rhine River, which flows through Germany and the Netherlands before reaching the North Sea. The Rhine basin is ecologically significant, supporting diverse fish species, migratory birds, and riparian habitats. Nutrient and pollutant loads from upstream sources can impact downstream water quality, making effective treatment at plants like Ruelisheim critical for maintaining the ecological balance of this transboundary river system.
Frequently asked questions
The plant is located in Ruelisheim, a commune in the Haut-Rhin department of the Grand Est region, France, near the Ill River.
The plant serves approximately 47,000 people, making it a medium-sized agglomeration under EU classification.
The treated effluent is discharged into the Ill River, which flows into the Rhine River and eventually reaches the North Sea.
Under the EU UWWTD, plants serving over 15,000 people must provide secondary treatment. For sensitive areas, tertiary treatment is required. The Grand Est region includes sensitive zones, so Ruelisheim may need advanced treatment to reduce nutrients.
In France, plants of this scale typically provide secondary biological treatment, often with nutrient removal if discharging into sensitive areas. The EU UWWTD sets the minimum standards, and French regulations may impose additional requirements for phosphorus and nitrogen removal.
Nearby plants