According to municipal officials, Göteborg, Lerum, and Alingsås have signed letters of intent for Project Mjörn, with Alingsås joining in 2025. Göteborg supplies other parts of the region, and for Lerum, the project is an investment for the future as it grows.
According to officials, the plan is to extract water from Mjörn near Hjällsnäs, where a pump station and new pipelines will be built. The project must first obtain permits from the Land and Environment Court for water extraction. Consultations are scheduled for May to June, and an application for a water protection area will be submitted next year. After permits, construction will lay pipelines to Alelyckan water treatment plant in Göteborg and a treatment plant in Lerum.
For Alingsås, the project is about controlling water levels in Mjörn to avoid floods, according to the municipality. Water levels can be controlled using the hydropower plant in Solveden, which is owned by Alingsås Energi. A new permit for the hydropower plant is needed to regulate water levels and link drinking water extraction.
The specific timeline for permits and construction, as well as project costs, have not been disclosed. The impact on the lake's ecosystem remains unclear.