Overview
Passail wastewater treatment plant serves the community of Unterpircha in Steiermark, Austria. It treats wastewater for approximately 6,617 people as part of the region's municipal infrastructure.
The Passail wastewater treatment plant is located in Unterpircha, a locality within the municipality of Passail in the district of Weiz, Steiermark, Austria. The plant serves a population of approximately 6,617 residents, placing it in the small-to-medium agglomeration category under Austrian and EU regulations. As an Austrian facility, the plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size discharging into inland waters. The directive also mandates more stringent treatment if the receiving water body is designated as a sensitive area. The plant is expected to meet these regulatory standards. The treated effluent from the plant is discharged into local watercourses that eventually drain into the Danube River basin, which flows into the Black Sea. The plant plays a key role in protecting the water quality of the region's streams and rivers, supporting aquatic life and downstream ecosystems.
Environmental context
The Passail plant discharges into small streams that are part of the Raab River system, which flows into the Danube and ultimately the Black Sea. This watershed supports diverse aquatic habitats and is important for regional biodiversity. The plant's operations help maintain water quality in these sensitive inland waters, preventing nutrient pollution and protecting downstream ecosystems.
Frequently asked questions
The Passail wastewater treatment plant is located in Unterpircha, a locality within the municipality of Passail in the district of Weiz, Steiermark, Austria.
The plant serves approximately 6,617 residents, classifying it as a small-to-medium agglomeration under EU regulations.
The treated effluent is discharged into local streams that are part of the Raab River system, which flows into the Danube and ultimately the Black Sea.
As an Austrian facility, the plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for agglomerations of this size and may require advanced treatment if the receiving waters are sensitive.
Under the EU Urban Waste Water Treatment Directive, plants serving between 2,000 and 10,000 population equivalent are generally required to provide secondary treatment (biological treatment) to reduce organic matter and suspended solids.
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