UWWTP_TOLMIN - Advanced Wastewater Treatment Plant in Tolmin, Slovenia

UWWTP_TOLMIN is an advanced wastewater treatment plant located in Kozaršče, near Tolmin, Slovenia. It serves a population of approximately 2,302 people, reflecting a small agglomeration in the Soča River valley. The plant's designed capacity is 7,500 m³/day, with a current discharge volume of 746.95 m³/day, indicating ample reserve capacity. As an advanced treatment facility, UWWTP_TOLMIN goes beyond secondary treatment to remove nutrients and other pollutants, meeting stringent standards under the EU Urban Waste Water Treatment Directive (91/271/EEC). For small agglomerations like Tolmin, the directive requires appropriate treatment, and advanced treatment is often implemented in sensitive areas to protect water quality. The plant discharges treated wastewater into the Soča River basin, which flows through the Julian Alps and ultimately into the Adriatic Sea via the Gulf of Trieste. The Soča is known for its pristine waters and supports diverse aquatic life, including the endemic marble trout. The plant's advanced treatment helps preserve this ecologically sensitive river system.

The treated effluent from UWWTP_TOLMIN enters the Soča River, a major watercourse in western Slovenia that drains the Julian Alps. The Soča flows southwest through the Soča Valley, passing through towns like Kobarid and Bovec, before crossing into Italy and emptying into the Adriatic Sea near Monfalcone. The river supports a rich ecosystem, including native fish species and riparian habitats, and is a popular destination for recreation. Advanced treatment at the plant ensures minimal nutrient loading, protecting downstream water quality in this sensitive alpine watershed.