Overview
Pasvalio aglomeracija is a municipal wastewater treatment plant serving Pasvalys, Lithuania. It operates under EU regulations for agglomerations of 44,500 population equivalent.
Pasvalio aglomeracija is the wastewater treatment plant serving the city of Pasvalys in Panevėžio apskritis, Lithuania. The plant handles wastewater from a population equivalent of 44,500, classifying it as a medium-sized agglomeration under EU standards. As a Lithuanian facility, the plant operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment for agglomerations of this scale. The directive also mandates more advanced treatment if the receiving waters are designated as sensitive areas. The plant discharges treated effluent into the local watershed, which ultimately drains into the Baltic Sea via the Lėvuo River and the Nemunas River basin. Proper treatment is essential to protect downstream aquatic ecosystems and the sensitive Baltic Sea environment.
Environmental context
The plant's treated effluent flows into the Mūša River, a tributary of the Lėvuo River, which joins the Nemunas River before reaching the Curonian Lagoon and the Baltic Sea. This watershed supports diverse aquatic life and is an important migratory corridor for fish. The Baltic Sea is a semi-enclosed, brackish sea sensitive to nutrient pollution, making effective wastewater treatment critical for preventing eutrophication.
Frequently asked questions
Pasvalio aglomeracija is located at 23A Mūšos g., Pasvalys, in Panevėžio apskritis, Lithuania.
The plant serves a population equivalent of 44,500, classifying it as a medium-sized agglomeration under EU standards.
The plant discharges treated effluent into the Mūša River, which flows into the Lėvuo River and eventually reaches the Nemunas River and the Baltic Sea.
As a Lithuanian plant serving over 10,000 PE, it is subject to the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment and possibly more advanced treatment if the receiving waters are sensitive.
Under the EU directive, plants of this scale typically employ secondary biological treatment. If the receiving water body is in a sensitive area, tertiary treatment for nutrient removal may be required.
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