UWWTP Radnevo - Wastewater Treatment Plant in Znamenosec, Bulgaria

UWWTP Radnevo is a municipal wastewater treatment facility located near the town of Znamenosec in the Stara Zagora Province of Bulgaria. It serves a population of approximately 17,428 people, classifying it as a medium-sized agglomeration under EU classification. The plant is situated inland, away from coastal areas, and its operations are part of Bulgaria's national wastewater management infrastructure. As a Bulgarian facility, UWWTP Radnevo is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size. The directive also mandates more advanced treatment if the receiving waters are designated as sensitive areas. The plant is expected to meet these regulatory standards to protect local water quality. The treated effluent from UWWTP Radnevo is discharged into local watercourses that ultimately drain into the Maritsa River basin, which flows through Bulgaria and Greece before reaching the Aegean Sea. The plant plays a crucial role in preventing untreated wastewater from entering these waters, thereby supporting the ecological health of the Maritsa River and its downstream ecosystems.

UWWTP Radnevo discharges into the Maritsa River basin, which flows southeast through Bulgaria and Greece to the Aegean Sea. The Maritsa River supports diverse aquatic life and is an important water resource for agriculture and industry in the region. The plant's treatment helps reduce nutrient and pollutant loads, protecting downstream water quality and the sensitive ecosystems of the Aegean coastal zone.