Szilaspogony Szennyviztisztito Telep - Advanced Wastewater Treatment in Nógrád County, Hungary

Szilaspogony Szennyviztisztito Telep is a wastewater treatment facility located in the village of Szilaspogony, in Nógrád county, northern Hungary. The plant serves a small population of 535 residents, reflecting the rural character of the area. It operates under Hungary's implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC), which sets standards for small agglomerations. The plant employs advanced treatment processes, going beyond the secondary treatment typically required for settlements of this size under EU regulations. This indicates a higher level of nutrient removal, likely to protect sensitive receiving waters. The designed capacity is 2150 m³/day, and the current discharge volume is 63.07 m³/day, suggesting ample reserve capacity. The treated effluent is discharged into local watercourses that eventually drain into the Tisza River basin, a major tributary of the Danube. The region's aquatic ecosystems benefit from the advanced treatment, which reduces nutrient loading and supports biodiversity in downstream rivers and wetlands.

The plant's discharge enters small streams in the Cserhát hills, which flow into the Zagyva River and ultimately the Tisza River, a key tributary of the Danube. The Tisza basin supports diverse aquatic life, including fish species such as pike and catfish, and is an important migratory corridor for birds. Advanced treatment helps minimize eutrophication risks in this ecologically sensitive watershed.