Main contract for the expansion of the Hinta surface water treatment plant

Summary

The procurement concerns the main contract for expanding the Hinta surface water treatment plant in Oulu, Finland. The project includes a treatment plant building, an underground tunnel, an underground reservoir building, demanding earthworks and foundation works, watertight pools and concrete structures, process and building services technology, piping, and a connecting tunnel. The gross floor area is approximately 12,000 m². The works are planned to start in mid-March 2027; the plant must be ready for commissioning by the end of 2029 and operational and handed over by 30 June 2030. The procedure is competitive dialogue, and participation applications must be submitted by 10 September 2026 at 09:00. The estimated contract value is EUR 50 million. The procurement and project language is Finnish, and personnel proposed for the project must have excellent Finnish-language skills.