SBR Reaktors Aiz zalas noras Wastewater Treatment Plant, Birzgales pagasts, Latvia

SBR Reaktors Aiz zalas noras is a wastewater treatment plant located in Birzgales pagasts, Ogres novads, Latvia. The plant served a small population of 339 people and is now closed. It was situated along the Bauska-Aizkraukle road, reflecting its rural setting. The plant provided secondary treatment, which is the standard required under the EU Urban Waste Water Treatment Directive for agglomerations of this size. Its design capacity of 3000 m³/day suggests it was built to accommodate future growth or seasonal variations. The actual discharge volume was 64.70 m³/day, indicating low utilization. The area drains into the Daugava River basin, which flows into the Baltic Sea via the Gulf of Riga. The plant's closure may reflect consolidation of wastewater services in the region.

The plant is located in the Daugava River basin, which ultimately drains into the Baltic Sea via the Gulf of Riga. The Daugava is a major river supporting diverse aquatic life and providing drinking water for downstream communities. The plant's secondary treatment would have reduced organic pollutants and suspended solids, protecting the river ecosystem. Its closure may reduce local discharge but could shift treatment to a larger centralized facility.