UWWTP_HRASTNIK Wastewater Treatment Plant, Hrastnik, Slovenia

UWWTP_HRASTNIK is a municipal wastewater treatment plant located in Hrastnik, a town in central Slovenia. The facility serves a population of approximately 2,153 residents, classifying it as a small agglomeration under EU regulations. The plant is situated in the Sava River basin, a major waterway that flows through Slovenia and into Croatia. As a Slovenian facility, UWWTP_HRASTNIK operates under the national transposition of the EU Urban Waste Water Treatment Directive (91/271/EEC). For agglomerations with a population equivalent between 2,000 and 10,000, the directive requires appropriate treatment (secondary or equivalent) to protect receiving waters. Slovenia's regulatory framework aligns with EU standards, ensuring that plants of this size meet effluent quality requirements. The treated wastewater from UWWTP_HRASTNIK is discharged into the local water environment, ultimately reaching the Sava River. The Sava River flows southeast through Slovenia and Croatia before joining the Danube at Belgrade, Serbia. The river supports diverse aquatic life and is an important ecological corridor in the region. The plant's operation contributes to protecting water quality in the Sava basin, which is used for drinking water supply, recreation, and agriculture downstream.

UWWTP_HRASTNIK discharges into the Sava River basin, which drains into the Danube River and ultimately the Black Sea. The Sava River supports diverse aquatic ecosystems, including fish species such as the Danube salmon and various cyprinids. The plant's location in central Slovenia places it in a region with moderate industrial activity and agricultural land use, making effective wastewater treatment essential for maintaining river health and downstream water quality.