UWWTP Domzale Kamnik - Wastewater Treatment Plant in Domzale, Slovenia

UWWTP Domzale Kamnik is a municipal wastewater treatment plant located in Mavenče, Mala Loka, near Domžale, Slovenia. Serving an estimated population of 74,669, the facility is part of the country's wastewater infrastructure for the Ljubljana region. The plant's location in the Kamnik-Bistrica river basin places it within a network of treatment facilities that protect downstream water quality. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), agglomerations with a population equivalent (PE) between 10,000 and 150,000 are classified as medium agglomerations and are required to provide secondary treatment as a minimum. For sensitive areas, more stringent treatment may be required. Slovenia, as an EU member state, implements this directive through national legislation, ensuring that plants like UWWTP Domzale Kamnik meet appropriate treatment standards to protect receiving waters. The treated effluent from the plant is discharged into the Kamnik Bistrica River, a tributary of the Sava River, which flows into the Danube River and ultimately reaches the Black Sea. This river system supports diverse aquatic life and is an important ecological corridor in the region. The plant's operation contributes to maintaining water quality in the Sava River basin, which is vital for both ecological health and downstream water uses.

The plant discharges into the Kamnik Bistrica River, a tributary of the Sava River, which flows into the Danube River and ultimately the Black Sea. This watershed supports diverse aquatic ecosystems and is an important migratory corridor for fish species. The Sava River basin is ecologically sensitive, with floodplain forests and wetlands that rely on good water quality.