Tykocin Wastewater Treatment Plant - Secondary Treatment in Podlaskie, Poland

The Tykocin wastewater treatment plant is located in the town of Tykocin, in województwo podlaskie, northeastern Poland. It serves a population of approximately 2,986 residents, classifying it as a small agglomeration under Polish and EU regulations. The plant is situated inland, away from coastal areas, and treats municipal wastewater from the local community. The plant provides secondary treatment, which is the minimum standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. It has a designed capacity of 5,000 m³/day and currently discharges an average of 425.76 m³/day of treated effluent. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. The treated wastewater is discharged into a local watercourse that eventually drains into the Narew River basin, part of the Vistula River system flowing into the Baltic Sea. The plant plays a key role in protecting the local aquatic environment and downstream ecosystems from untreated sewage pollution.

The plant's effluent enters a small watercourse that flows into the Narew River, a major tributary of the Vistula River. The Vistula ultimately discharges into the Baltic Sea. The region includes ecologically sensitive areas such as the Biebrza Marshes and Narew National Park, which support diverse aquatic life and migratory birds. Proper treatment helps prevent nutrient loading and eutrophication in these downstream environments.