Increasing Water Supply and Sewerage Capacity Required by the Otanmäki-Humpinsuo Master Plan

Summary

The tender concerns a comprehensive water and sewerage infrastructure design assignment to increase capacity in the Otanmäki-Humpinsuo area. The work includes refining and sizing requirements using Kajaani Vesi’s network model, designing a new underground water reservoir and pressure boosting station, designing wastewater pumping stations, planning pipework and capacity changes for existing facilities, designing water supply and sewerage networks, and modifying control automation. Solutions essential for the Otanmäki-Alussuo plan area must be designed through the construction and procurement preparation stages, with the required tendering material prepared; the remaining design work will be carried out at general-plan level. The procedure is open and the tender submission deadline is 24 September 2026 at 11:00. Bidders must meet the capacity requirements for water and sewerage infrastructure design and provide the evidence and compliance documents required in the tender documents.