Karczmiska Wastewater Treatment Plant, Karczmiska Pierwsze, Poland

The Karczmiska wastewater treatment plant is located in Karczmiska Pierwsze, a village in the Lublin Voivodeship of eastern Poland. The facility serves a small population of 989 residents, reflecting its role in rural wastewater management within the gmina of Karczmiska. The plant provides secondary treatment, which is the standard biological treatment required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations with a population equivalent below 10,000. The designed capacity of 3705 m³/day indicates the plant's ability to handle peak flows, while the current discharge volume of 141.02 m³/day suggests operational headroom. Treated effluent from the plant is discharged into local watercourses that ultimately drain into the Vistula River basin, which flows northward to the Baltic Sea. The plant plays a key role in protecting local streams and groundwater from untreated sewage, supporting the ecological health of the region's rural landscape.

The plant discharges into the Vistula River basin, which drains into the Baltic Sea. The local watershed includes small streams and agricultural areas, where nutrient removal from wastewater helps prevent eutrophication in downstream water bodies. The plant's secondary treatment reduces organic load and suspended solids, contributing to the ecological balance of the region's surface waters.