Horyniec-Zdrój Wastewater Treatment Plant, Podkarpackie, Poland

The Horyniec-Zdrój wastewater treatment plant is located in the spa town of Horyniec-Zdrój, in the Podkarpackie region of southeastern Poland. The facility serves a population of 1,540 and is classified as a small agglomeration under Polish and EU regulations. The plant provides secondary treatment, which is the minimum standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for discharges into freshwater. The plant's designed capacity is 5,333 m³/day, and it currently treats an average of 219.58 m³/day, indicating significant spare capacity. As a small plant, it is subject to less stringent monitoring than larger facilities but must still comply with national effluent standards. The treated effluent is discharged into a local watercourse that ultimately drains into the San River basin, a tributary of the Vistula River, which flows into the Baltic Sea. The plant plays a key role in protecting the region's groundwater and surface water quality, particularly given the town's status as a health resort reliant on clean natural resources.

The plant discharges into a local stream within the San River basin, which flows into the Vistula River and then the Baltic Sea. The surrounding area is part of the Roztocze region, known for its diverse aquatic ecosystems and groundwater resources. The plant's secondary treatment helps protect downstream water quality, supporting aquatic life and the recreational value of the region's rivers.