Oczyszczalnia WSZPZOZ Gostynin Zalesie - Secondary Wastewater Treatment Plant in Gostynin, Poland

Oczyszczalnia WSZPZOZ Gostynin Zalesie is a wastewater treatment plant located in Zalesie, near Gostynin, in the Mazowieckie region of Poland. The plant serves a small population of 806 people, reflecting its role in a rural or small-town setting. It is part of the WSZPZO im. prof. Eugeniusza Wilczkowskiego facility. The plant provides secondary treatment, which is the standard level required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations with a population equivalent (PE) between 2,000 and 10,000. Although the population served here is below that threshold, the plant's design capacity of 2,457 m³/day suggests it can handle higher loads, possibly from seasonal or industrial sources. The actual discharge volume is 114.92 m³/day, indicating low utilization. The treated effluent likely discharges into a local watercourse that drains into the Vistula River basin, eventually reaching the Baltic Sea. The plant's operation helps protect local water quality and supports the ecological health of the region's rivers and downstream environments.

The plant is located inland in the Mazowieckie region, within the Vistula River basin. Treated wastewater likely flows into a local stream or river that joins the Vistula, which ultimately discharges into the Baltic Sea. The area supports diverse aquatic life and is part of a larger watershed that requires careful management to prevent nutrient pollution and maintain water quality.