Szklary Wastewater Treatment Plant, Szklary | Poland

Szklary wastewater treatment plant is located in the village of Szklary, within the gmina Jerzmanowice-Przeginia in powiat krakowski, województwo małopolskie, Poland. The facility was designed to serve a local population with a capacity of 5400 m³ per day, reflecting its role in managing domestic wastewater in this rural area of southern Poland. The plant provided secondary treatment, which is the standard biological treatment stage required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this scale. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids before discharge. The plant is currently closed, and its operational status may reflect infrastructure upgrades or decommissioning. The treated effluent from the plant would have discharged into local watercourses that drain into the Vistula River basin, ultimately reaching the Baltic Sea. The facility's operation contributed to protecting the local watershed and downstream aquatic ecosystems from untreated wastewater pollution.

The plant is situated in the Vistula River basin, which drains through central Poland into the Baltic Sea. The local watershed includes small streams and groundwater systems that support diverse aquatic life and agricultural activities. Proper wastewater treatment in this region helps maintain water quality in the Vistula and its tributaries, which are ecologically important for fish migration and biodiversity.