Wartkowice Wastewater Treatment Plant, Stary Gostków, Poland

The Wartkowice wastewater treatment plant is located in Stary Gostków, within the gmina of Wartkowice in the Łódź Voivodeship of central Poland. This facility serves a small agglomeration of 1,009 people, reflecting the rural character of the region. The plant provides secondary treatment, which is the standard required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 3,400 m³/day and an actual discharge volume of 143.87 m³/day, the plant operates well below its capacity, indicating potential for future growth or seasonal variations. The treated effluent is discharged into local watercourses that ultimately drain into the Bzura River, a tributary of the Vistula River, which flows into the Baltic Sea. The plant plays a key role in protecting the local watershed and downstream ecosystems from untreated wastewater.

The plant discharges into small streams that feed into the Bzura River, part of the Vistula basin. The Vistula flows northward through Poland into the Baltic Sea, a semi-enclosed sea sensitive to nutrient pollution. The surrounding area is predominantly agricultural, and the plant's secondary treatment helps reduce organic load and nutrients, supporting aquatic life in the downstream rivers and the Baltic coastal zone.