Overview
ERMOUPOLI wastewater treatment plant serves the community of Μάννα on Syros Island, Greece, with a designed capacity of 1.00 and a population equivalent of 27,800.
The ERMOUPOLI wastewater treatment plant is located in the area of Καλαμίσια, Μάννα, on the island of Syros, within the South Aegean administrative region of Greece. It serves a population equivalent of 27,800, placing it in the medium-sized agglomeration category 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 agglomerations of this size discharging into coastal or sensitive areas. The plant is situated within 50 km of the coast, reflecting the island's maritime context. The treated effluent is discharged into the Aegean Sea, a semi-enclosed sea with significant ecological importance. The surrounding watershed includes the island's drainage systems, which ultimately flow into the Aegean. The region supports diverse marine life and is part of the Mediterranean basin, where nutrient management is critical to prevent eutrophication.
Environmental context
The plant discharges into the Aegean Sea, a key water body of the eastern Mediterranean. The Aegean Sea supports important fisheries and marine biodiversity, including seagrass meadows and migratory species. Nutrient inputs from wastewater must be carefully managed to avoid eutrophication in this semi-enclosed marine environment, which has limited water exchange with the open Mediterranean.
Frequently asked questions
The ERMOUPOLI plant is located in the area of Καλαμίσια, Μάννα, on the island of Syros, in the South Aegean region of Greece.
The plant serves a population equivalent of 27,800, classifying it as a medium-sized agglomeration under EU wastewater directives.
The treated effluent is discharged into the Aegean Sea, a coastal marine environment. The plant is located within 50 km of the coast, indicating a marine discharge.
As a Greek facility, the plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for agglomerations of this size discharging into coastal waters.
Under the EU Urban Waste Water Treatment Directive, agglomerations with a population equivalent between 10,000 and 150,000 are generally required to have secondary treatment, with tertiary treatment in sensitive areas. Coastal plants like ERMOUPOLI typically meet secondary treatment standards.
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