Estimated cost of proposed eastern South Dakota water pipeline is at least $8.4 billion

The proposed Dakota Mainstem Regional Water System, aimed at delivering Missouri River water to eastern South Dakota, is now estimated to cost between $8.4 billion and $10 billion. This significant financial undertaking highlights the region's growing water needs and the challenges of large-scale infrastructure projects. The scale of the investment underscores the importance of careful planning and community support to ensure the project's feasibility and long-term sustainability. Such a massive pipeline would be a transformative development for South Dakota, potentially reshaping water management in the state.