PU Dagdas pilsetas DzKSU - Dagda Wastewater Treatment Plant, Latvia

PU Dagdas pilsetas DzKSU is a municipal wastewater treatment plant located at 12 Jelgavas iela in Dagda, Krāslavas novads, Latvia. The facility serves a population of approximately 1,540 people and is designed to handle up to 6,000 m³ of wastewater per day, with a current discharge volume of 254.80 m³/day. The plant provides secondary treatment, which is the standard biological treatment required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids, ensuring compliance with EU effluent standards. The treated effluent is discharged into the local watershed, which ultimately drains into the Daugava River basin and the Baltic Sea. The plant plays a key role in protecting the region's water quality, supporting aquatic life in the downstream ecosystems.

The plant discharges into the Daugava River basin, which flows into the Baltic Sea. The Baltic Sea is a sensitive marine environment with limited water exchange, making nutrient removal critical. The plant's secondary treatment helps reduce organic pollution, supporting the ecological health of the river and downstream coastal waters.