Overview
UWWTP Žiri serves the town of Žiri, Slovenia, treating wastewater for approximately 5,500 residents. The plant operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this size.
UWWTP Žiri is a municipal wastewater treatment plant located in Žiri, a town in the Upper Carniola region of Slovenia. The facility serves a population of approximately 5,524 people, classifying it as a small to medium agglomeration under EU regulations. The plant is situated near the Ledinica stream, a tributary of the Sora River, and plays a key role in protecting local water quality. As a Slovenian facility, UWWTP Žiri is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations with a population equivalent (PE) between 2,000 and 10,000. The directive also mandates more stringent treatment if the receiving waters are designated as sensitive areas. Slovenia has transposed these requirements into national law, and the plant is expected to meet the applicable standards. The treated effluent from UWWTP Žiri is discharged into the Ledinica stream, which flows into the Sora River, a tributary of the Sava River. The Sava ultimately drains into the Danube River and then the Black Sea. The local watershed supports diverse aquatic life and is important for regional biodiversity. Proper treatment at this plant helps prevent nutrient pollution and protects downstream ecosystems.
Environmental context
UWWTP Žiri discharges into the Ledinica stream, a tributary of the Sora River, which flows into the Sava River and eventually the Danube River and Black Sea. The Sora River basin supports diverse aquatic habitats and is ecologically sensitive, particularly in its upper reaches. Effective wastewater treatment is essential to prevent eutrophication and maintain water quality for downstream communities and ecosystems.
Frequently asked questions
UWWTP Žiri is located in the town of Žiri, in the Upper Carniola region of Slovenia. The plant is situated near the Ledinica stream, a tributary of the Sora River.
The plant serves approximately 5,524 residents, classifying it as a small to medium agglomeration under the EU Urban Waste Water Treatment Directive.
Treated effluent from UWWTP Žiri is discharged into the Ledinica stream, which flows into the Sora River, then the Sava River, and ultimately the Danube River and Black Sea.
As a Slovenian plant, UWWTP Žiri operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size. Slovenia has implemented this directive into national law.
Under the EU UWWTD, plants serving between 2,000 and 10,000 population equivalent are required to have secondary treatment. In sensitive areas, more stringent treatment may be needed to reduce nutrients.
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