Floda avloppsreningsverk - Closed Advanced Wastewater Treatment Plant in Floda, Sweden

Floda avloppsreningsverk is a former wastewater treatment plant located in Floda, Lerums kommun, Västra Götalands län, Sweden. The plant provided advanced treatment for the local population before its closure. As a closed facility, it no longer processes wastewater, but its historical operation contributed to the region's water management infrastructure. The plant's advanced treatment level indicates it employed processes beyond secondary treatment, such as nutrient removal or disinfection, which are typical for sensitive receiving environments. Under Swedish and EU regulations, advanced treatment is often required for discharges into sensitive areas to protect water quality. The plant's closure may reflect upgrades or consolidation of regional treatment capacity. The plant is situated inland, more than 10 km from the coast, and its treated effluent would have discharged into local watercourses that eventually drain into the Kattegat or Skagerrak via the Göta älv river system. The surrounding area includes lakes and streams that support diverse aquatic life and are important for recreation and biodiversity.

The plant is located in the Göta älv drainage basin, which flows into the Kattegat, a marine area connecting to the North Sea. The local watershed includes small lakes and streams that provide habitat for fish and invertebrates. Downstream waters are ecologically sensitive, supporting migratory fish species and serving as a corridor for aquatic life. The region's water quality is managed under the EU Water Framework Directive.