Jodlownik Wastewater Treatment Plant, Jodłownik, Lesser Poland

Jodlownik wastewater treatment plant is located in Jodłownik, a village in the Lesser Poland Voivodeship (województwo małopolskie) of southern Poland. The plant serves a small population of 716 residents, reflecting its role in a rural community within the Limanowa County. The facility provides secondary treatment, which is the standard biological treatment required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations with a population equivalent (PE) between 2,000 and 15,000. Although the plant serves fewer than 2,000 people, it still meets the secondary treatment benchmark. The plant has a designed capacity of 833.00 m³/day and currently discharges 102.09 m³/day, indicating ample reserve capacity. Treated effluent is released into local watercourses that drain into the Raba River, a tributary of the Vistula River, which ultimately flows into the Baltic Sea. The plant's operation helps protect the Raba River basin from nutrient pollution, supporting aquatic life and downstream water quality in the Vistula estuary.

The plant discharges into small streams that feed the Raba River, a right-bank tributary of the Vistula. The Vistula flows north through Poland into the Baltic Sea via the Gulf of Gdańsk. The Raba River supports diverse freshwater habitats and is important for regional biodiversity. Secondary treatment reduces organic load and suspended solids, mitigating eutrophication risks in the Baltic Sea, which is sensitive to nutrient inputs.