Korinos Wastewater Treatment Plant, Katerini, Central Macedonia, Greece

The Korinos wastewater treatment plant is a municipal facility serving the town of Korinos, part of the Municipality of Katerini in the Pieria regional unit, Central Macedonia, Greece. The plant serves a population of approximately 12,490 people, placing it in the medium agglomeration category under Greek and EU regulations. As a Greek wastewater treatment plant, Korinos operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment for agglomerations of this size discharging into coastal waters. The facility is subject to national permitting and monitoring by Greek environmental authorities. The treated effluent from Korinos ultimately reaches the Thermaic Gulf, a semi-enclosed embayment of the Aegean Sea. The gulf supports important fisheries and marine biodiversity, including seagrass meadows and migratory fish species. Proper wastewater treatment is essential to protect water quality in this ecologically sensitive coastal area.

Korinos is located in the Pieria coastal plain, with drainage flowing eastward toward the Thermaic Gulf. The gulf receives freshwater from several rivers, including the Aliakmonas and Axios, and supports diverse marine life, including commercial fish stocks and protected species. The plant's discharge contributes to the nutrient load in the gulf, making effective treatment critical for preventing eutrophication and maintaining ecological balance in this semi-enclosed sea.