Oczyszczalnia Miasta Kamienna Gora - Marciszów Wastewater Treatment Plant, Poland

Oczyszczalnia Miasta Kamienna Gora is a municipal wastewater treatment plant located in Marciszów, within the powiat kamiennogórski of the Lower Silesian Voivodeship in southwestern Poland. The facility serves a population of approximately 34,777, classifying it as a medium agglomeration under EU classification. As a Polish plant operating under the EU Urban Waste Water Treatment Directive 91/271/EEC, this facility is required to provide secondary treatment as a minimum standard. For agglomerations between 10,000 and 100,000 population equivalent, the directive mandates secondary treatment, with tertiary treatment required in sensitive areas. The plant's inland location suggests it discharges to a freshwater body. The plant's treated effluent likely flows into the Bóbr River basin, which is part of the Oder River system, ultimately draining into the Baltic Sea. The Lower Silesian region is characterized by mountainous terrain and numerous small watercourses, making proper treatment essential for protecting local aquatic ecosystems and downstream water quality.

The plant discharges into the Bóbr River catchment, a tributary of the Oder River, which flows into the Baltic Sea. This watershed supports diverse aquatic life and is an important ecological corridor in the Sudetes mountain region. The area's sensitive freshwater ecosystems require effective nutrient removal to prevent eutrophication downstream.