Augustow Wastewater Treatment Plant, Czarnucha | Podlaskie, Poland

The Augustow wastewater treatment plant is located in Czarnucha, within the gmina of Augustow in northeastern Poland's Podlaskie Voivodeship. It serves a population of about 42,044, classifying it as a medium-sized agglomeration under EU definitions. The plant is situated inland, away from the Baltic coast, and its operations are governed by Polish regulations transposing the EU Urban Waste Water Treatment Directive. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), agglomerations with a population equivalent (PE) between 10,000 and 100,000 are required to have secondary treatment as a minimum. For sensitive areas, more stringent treatment may be mandated. The plant's treatment processes are designed to meet these standards, ensuring compliance with national and EU water quality objectives. The treated effluent is discharged into local watercourses that ultimately drain into the Baltic Sea via the Vistula River basin. The surrounding region includes the Biebrza River valley, an ecologically important area supporting diverse aquatic and bird life. Proper wastewater treatment is essential to protect these sensitive ecosystems from nutrient pollution and other contaminants.

The plant discharges into local rivers that flow into the Biebrza River, a major tributary of the Narew River, which eventually reaches the Baltic Sea. The Biebrza Valley is a vast wetland complex that supports rich biodiversity, including migratory birds and rare plant species. Effective treatment helps prevent eutrophication and maintains water quality in this ecologically sensitive area.