Hydrocentrum Wastewater Treatment Plant, Czeremcha, Podlaskie Voivodeship

Hydrocentrum is a municipal wastewater treatment plant located in Czeremcha, a village in the Podlaskie Voivodeship of eastern Poland. The plant serves a small population of 438 residents and has a designed capacity of 1,100 cubic meters per day, with an average discharge volume of 62.45 m³/day. As a secondary treatment facility, Hydrocentrum provides biological treatment to remove organic matter and suspended solids, meeting the requirements of the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations under 2,000 population equivalent. The directive mandates secondary treatment for all discharges from such communities to protect receiving waters. The plant's treated effluent is discharged into local watercourses that drain into the Bug River basin, part of the larger Vistula River system flowing into the Baltic Sea. The surrounding area is characterized by agricultural land and forests, with the nearby Białowieża Forest being a significant ecological zone, though the plant's discharge does not directly affect protected areas.

The treated effluent from Hydrocentrum enters small streams in the Bug River catchment, which flows northwest to join the Narew River and eventually the Vistula, discharging into the Baltic Sea. The region's aquatic ecosystems support diverse species, including fish and macroinvertebrates, and the plant's secondary treatment helps maintain water quality in this rural, ecologically sensitive area.