SIA Jelgavas novada KU Kalnciems Wastewater Treatment Plant, Kalnciems, Latvia

SIA Jelgavas novada KU Kalnciems is a wastewater treatment plant located in Kalnciems, Kalnciema pagasts, Jelgavas novads, Latvia. The plant served a population of 1,476 and is now closed. It is situated inland, more than 10 km from the coast, and its operations were part of the municipal wastewater infrastructure for the local community. The plant provided secondary treatment, which is the standard level required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. The designed capacity was 2,400 m³/day, and the actual discharge volume was 281.70 m³/day, indicating a low utilization rate. As a closed facility, it no longer operates, but its historical role was to treat wastewater from the Kalnciems area. The plant's treated effluent was discharged into the local watershed, which ultimately drains into the Baltic Sea via the Lielupe River basin. The Lielupe River is an important watercourse in Latvia, supporting diverse aquatic life and flowing into the Gulf of Riga. The plant's operations contributed to protecting the downstream environment from untreated wastewater.

The plant discharged into the Lielupe River basin, which flows into the Gulf of Riga and the Baltic Sea. The Lielupe River supports diverse aquatic ecosystems and is an important migratory corridor for fish. The Baltic Sea is a sensitive brackish water body with eutrophication challenges, making nutrient removal critical for downstream environmental health.