Overview
The CHALKIDA wastewater treatment plant serves the city of Chalkida in Central Greece, with a population equivalent of 63,500. It is located near the Euripus Strait, a narrow channel connecting the Euboean Gulf to the South Euboean Gulf.
The CHALKIDA wastewater treatment plant is a municipal facility serving Chalkida, the capital of the island of Euboea in Central Greece. The plant is designed to treat wastewater from an agglomeration of approximately 63,500 people, classifying it as a medium-to-large urban wastewater system under Greek and EU regulations. As a Greek facility, the plant operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment for discharges into coastal waters and more advanced treatment in sensitive areas. Given its coastal proximity, the plant is expected to meet stringent effluent standards to protect marine water quality. The treated effluent is discharged into the Euripus Strait, a dynamic tidal channel that connects the North and South Euboean Gulfs. This water body ultimately drains into the Aegean Sea. The strait is ecologically significant, supporting diverse marine life and serving as a migratory corridor for fish species. The plant's performance is critical to maintaining water quality in this sensitive coastal environment.
Environmental context
The plant discharges into the Euripus Strait, a narrow tidal channel that connects the North Euboean Gulf to the South Euboean Gulf, which then flows into the Aegean Sea. This area is ecologically sensitive due to strong tidal currents and diverse marine habitats, including seagrass meadows and fish spawning grounds. The strait supports a variety of aquatic life and is important for local fisheries. Protecting water quality here is essential to maintain the ecological balance of the broader Aegean coastal ecosystem.
Frequently asked questions
The CHALKIDA wastewater treatment plant is located in Chalkida, the capital of the island of Euboea in Central Greece, near the Euripus Strait.
The plant serves a population equivalent of approximately 63,500 people, making it a medium-to-large agglomeration under EU classification.
The treated effluent is discharged into the Euripus Strait, a narrow tidal channel that connects the North and South Euboean Gulfs, ultimately flowing into the Aegean Sea.
As a Greek facility, the plant operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which mandates secondary treatment for coastal discharges and may require advanced treatment in sensitive areas.
For agglomerations of this size in Greece, secondary treatment is standard, with possible tertiary treatment if the receiving water body is designated as sensitive under the EU directive.
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