UWWTP_IG Wastewater Treatment Plant, Kot, Slovenia

UWWTP_IG is a municipal wastewater treatment plant located in Kot, a settlement within the municipality of Ig in central Slovenia. The plant serves a population of 687 and has a designed capacity of 1000 cubic meters per day, reflecting its role as a small-scale facility for the local community. As a secondary treatment plant, UWWTP_IG provides biological treatment to reduce organic matter and suspended solids. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), agglomerations with a population equivalent (PE) between 2,000 and 10,000 are required to have secondary treatment. Although this plant serves fewer than 2,000 people, it still meets secondary treatment standards, aligning with Slovenia's national implementation of the directive. The treated effluent from UWWTP_IG is discharged into the local environment, eventually draining into the Ljubljanica River basin, which flows through the Ljubljana Marsh and into the Sava River, a major tributary of the Danube. The receiving waters support diverse aquatic life and are part of a broader ecosystem that includes the Ljubljana Marsh, an ecologically sensitive area.

The plant discharges into the local watershed, which drains into the Ljubljanica River, a karst river that flows through the Ljubljana Marsh and joins the Sava River. The Sava then flows into the Danube, ultimately reaching the Black Sea. The Ljubljana Marsh is an ecologically important wetland that supports diverse flora and fauna, including migratory birds and protected species. The plant's secondary treatment helps reduce nutrient loads that could otherwise contribute to eutrophication in downstream water bodies.