Solina Wastewater Treatment Plant, Solina, Podkarpackie Voivodeship, Poland

The Solina wastewater treatment plant is located in Solina, a village in the Podkarpackie Voivodeship of southeastern Poland. It serves a small population of 214 residents, reflecting its role in a rural, mountainous region near the Solina Lake and the San River basin. 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 4200 m³/day suggests the facility can handle seasonal or tourist-related flow variations common in this area, which is a popular destination for water sports and recreation. The treated effluent is discharged into the local watershed, which ultimately drains into the San River, a tributary of the Vistula River, and then into the Baltic Sea. The plant's operation helps protect the water quality of Solina Lake and the downstream aquatic ecosystems, supporting biodiversity and recreational use.

The plant discharges into the San River basin, which flows through the Carpathian foothills and eventually reaches the Vistula River and the Baltic Sea. The Solina Lake, a large artificial reservoir upstream, is ecologically sensitive and supports diverse aquatic life, including fish species and migratory birds. The treatment plant plays a key role in maintaining water quality in this recreational and ecologically important area.