BAI Jaunolaine Wastewater Treatment Plant, Olaines pagasts, Latvia

BAI Jaunolaine is an advanced wastewater treatment plant located in Jaunolaine, Olaines pagasts, Olaines novads, Latvia. The facility serves a population of approximately 3,100 people, making it a small-scale municipal treatment plant in the region. It is situated inland, more than 10 km from the coast, and its treated effluent is discharged into the local water system. The plant employs advanced treatment processes, which go beyond the secondary treatment standard typically required for agglomerations of this size under the EU Urban Waste Water Treatment Directive (91/271/EEC). With a designed capacity of 4,300 m³/day and an average daily discharge volume of 240.73 m³, the plant operates well below its capacity, indicating room for future growth or seasonal variations. The facility is part of Latvia's national wastewater infrastructure, which is regulated under EU directives and national environmental laws. The treated wastewater from BAI Jaunolaine ultimately drains into the Baltic Sea via the Lielupe River basin, a major watercourse in central Latvia. The Lielupe River flows through agricultural and urban areas before reaching the Gulf of Riga, an ecologically sensitive part of the Baltic Sea. The plant's advanced treatment helps protect downstream water quality and supports the health of aquatic ecosystems in the region.

BAI Jaunolaine discharges treated wastewater into the Lielupe River basin, which flows into the Gulf of Riga and the Baltic Sea. The Lielupe River supports diverse aquatic life and is an important migratory corridor for fish species. The Baltic Sea is a semi-enclosed sea with limited water exchange, making it sensitive to nutrient pollution. Advanced treatment at this plant helps reduce nutrient loads, contributing to the ecological health of the downstream environment.