Vangazu pilsetas dome - Advanced Wastewater Treatment Plant in Vangaži, Latvia

Vangazu pilsetas dome is an advanced wastewater treatment plant located in Vangaži, Ropažu novads, Latvia. The facility serves a population of approximately 4,152 people, making it a small to medium-sized agglomeration under EU classification. The plant is situated inland, more than 10 km from the coast, and discharges treated effluent into the local watershed. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 1,674 m³/day and a reported discharge volume of 500.75 m³/day, the facility operates well within its capacity. As a Latvian plant, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for agglomerations of this size, and advanced treatment in sensitive areas. The treated wastewater from Vangazu pilsetas dome is discharged into the local river system, which eventually drains into the Baltic Sea via the Daugava River or nearby coastal waters. The plant plays a key role in protecting the region's water quality and supporting the ecological health of downstream aquatic habitats, including important fish spawning grounds and migratory corridors.

The plant discharges into the local river network, which flows into the Daugava River and ultimately the Baltic Sea. The Baltic Sea is a semi-enclosed, brackish water body sensitive to nutrient pollution, making advanced treatment crucial for preventing eutrophication. The surrounding watershed supports diverse aquatic life and serves as an important ecological corridor for migratory fish species.