Prostki Wastewater Treatment Plant | Secondary Treatment in Warmian-Masurian Voivodeship

Prostki wastewater treatment plant is located in the town of Prostki, within the gmina of Prostki in powiat ełcki, Warmian-Masurian Voivodeship, Poland. The plant serves a population of 1,887 and has a designed capacity of 4,875 m³/day, with a current discharge volume of 269.06 m³/day. The plant provides secondary treatment, which is the standard level required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. The directive mandates secondary treatment for populations between 2,000 and 10,000, and Prostki falls just below this threshold, but the plant still meets the expected treatment standards. The treated effluent is discharged into the local watershed, which ultimately drains into the Ełk River and then into the Great Masurian Lakes region. This area is ecologically sensitive, supporting diverse aquatic life and serving as an important habitat for migratory birds. The plant plays a key role in protecting the water quality of this valuable ecosystem.

The plant discharges into the local watershed that feeds the Ełk River, which flows through the Great Masurian Lakes region. This area is part of a larger system of interconnected lakes and rivers that eventually drain into the Baltic Sea. The region supports a rich diversity of aquatic plants and animals, including several fish species, and is an important stopover for migratory waterfowl. Protecting water quality here is essential for maintaining the ecological balance of this sensitive freshwater ecosystem.