Üllés Szennyvíztisztító Telep - Primary Wastewater Treatment in Üllés, Hungary

Üllés Szennyvíztisztító Telep is a municipal wastewater treatment facility located in Üllés, a village in the Dél-Alföld region of Hungary. The plant serves a small population of 333 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 treatment standards based on agglomeration size. The plant provides primary treatment, which involves physical sedimentation to remove settleable solids. While the designed capacity is 1,333 m³/day, the actual discharge volume is 39.26 m³/day, indicating low utilization. For small agglomerations like Üllés, the EU directive requires appropriate treatment to protect receiving waters, though primary treatment may be acceptable for discharges into less sensitive areas. The treated effluent is released into local waterways that drain into the Tisza River basin, part of the larger Danube River system. This ultimately flows into the Black Sea. The plant's location inland and away from coastal zones reduces direct marine impact, but local streams and groundwater quality depend on effective treatment to prevent nutrient and pathogen pollution.

The plant discharges into small streams within the Tisza River basin, which flows into the Danube and then the Black Sea. The region is part of the Great Hungarian Plain, where agriculture dominates and water resources are sensitive to nutrient loading. Protecting local water bodies from untreated or partially treated wastewater is crucial for maintaining aquatic biodiversity and supporting downstream ecosystems.