EGUISHEIM, Colmar | France Wastewater

Overview

EGUISHEIM wastewater treatment plant serves Colmar in Grand Est, France, with a population equivalent of 42,000. The facility operates under the EU Urban Waste Water Treatment Directive.

The EGUISHEIM wastewater treatment plant is located in Colmar, within the Grand Est region of France. It serves a population equivalent of 42,000, classifying it as a medium agglomeration under EU regulations. The plant is situated near the Thur River, a tributary of the Ill River, which flows into the Rhine. As a French facility, the plant is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for agglomerations of this size. The directive also requires more advanced treatment if the receiving waters are designated as sensitive areas. Compliance with the directive ensures a minimum level of treatment. The treated effluent is discharged into the local water system, ultimately reaching the Rhine River and the North Sea. The plant plays a key role in protecting the water quality of the Thur River and downstream ecosystems, including the Rhine, which supports diverse aquatic life and is an important migratory corridor for fish.

Environmental context

The plant discharges into the Thur River, a tributary of the Ill River, which joins the Rhine River. The Rhine is a major European waterway that flows into the North Sea, supporting diverse aquatic ecosystems and serving as a critical habitat for migratory fish species. The region's water quality is managed under the EU Water Framework Directive, aiming for good ecological status.

Frequently asked questions

The EGUISHEIM plant is located in Colmar, in the Grand Est region of France, near the Thur River.

The plant serves a population equivalent of 42,000 people.

Treated wastewater is discharged into the Thur River, which flows into the Ill River and then the Rhine River, eventually reaching the North Sea.

As a medium agglomeration serving 42,000 people, the plant is required to meet secondary treatment standards under the EU Urban Waste Water Treatment Directive (91/271/EEC). Additional treatment may be required if the receiving waters are sensitive.

In France, plants of this scale typically provide secondary biological treatment, often with nutrient removal, to comply with EU directives and national regulations.