Salgotarjan Szennyviztisztito Telep - Gyöngyöstarján Wastewater Treatment Plant, Hungary

Salgotarjan Szennyviztisztito Telep is a municipal wastewater treatment plant located in Gyöngyöstarján, within the Heves county of northern Hungary. The plant serves a population of approximately 26,274, classifying it as a medium-sized agglomeration under EU classification. It operates within the framework of Hungarian water management, which aligns with EU directives. As a plant serving over 10,000 people, it falls under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment as a minimum standard. The directive also mandates more advanced treatment if the receiving waters are designated as sensitive areas. The plant's treatment processes are designed to meet these regulatory requirements, ensuring compliance with effluent quality standards. The treated wastewater is discharged into local watercourses that ultimately drain into the Tisza River basin, a major tributary of the Danube River. The Danube flows into the Black Sea, making this plant part of a large international watershed. The surrounding region is characterized by agricultural and rural landscapes, and the plant plays a key role in protecting local water quality and downstream ecosystems.

The plant discharges into local streams that feed into the Tisza River, a major tributary of the Danube River, which ultimately flows into the Black Sea. The Tisza basin supports diverse aquatic life and is an important ecological corridor in Central Europe. The region's agricultural activity makes nutrient removal critical to prevent eutrophication in downstream waters.