Big investments are underway along the Missouri River to secure drinking water for hundreds of thousands of people. This page breaks down the four major projects, what they aim to achieve, timelines, and potential impacts. Read on to see how these projects could affect your daily water access, local economies, and the environment. Below you’ll find common questions people ask about these initiatives and clear, concise answers.
The four major efforts include the Lewis & Clark Regional Water System expansions along the Missouri River, WEB Water system improvements, and the Western Dakota Regional Water System. The base Lewis & Clark system currently serves 20 communities with about 44 million gallons per day, and expansions are planned along routing corridors that support growth in central and western South Dakota. A separate pipeline project is aimed at boosting water supply to the Black Hills region. These projects together stretch across multiple counties and aim to serve hundreds of thousands more residents.
The combined expansions are designed to increase capacity, strengthening reliability for long-term demand. By upgrading and extending pipelines and storage, they aim to deliver more consistent, safe drinking water to a larger population over the next 40–50 years, reducing the risk of shortages during droughts or peak use periods.
Key challenges include upgrading aging infrastructure, aligning large-diameter pipelines with existing systems, ensuring treatment and water quality meet standards, and coordinating multi-agency oversight. Construction timelines vary by project phase, but given the scale—tens of billions in potential investment—expect multi-year efforts with phased completions, interim milestones, and ongoing maintenance to minimize service disruption.
Environmental considerations cover land use, ecosystem effects of new pipelines, and water quality management. Economically, these projects can create jobs, improve regional resilience, and support growth in communities that rely on reliable water supply. Long-term benefits include stabilized utility costs, reduced vulnerability to drought, and potential incentives for new industries attracted by dependable water access.
Funding typically comes from a mix of federal, state, and local sources, along with bonds and utility rate structures. Costs are usually recovered over time through water user rates, with considerations for affordability and impact on households and businesses. Details vary by project phase and funding agreements, but financial planning aims to spread costs while ensuring service continuity.
Communities typically receive updates through official public meetings, utility newsletters, local media, and online dashboards. Utility teams aim to provide clear timelines, any temporary service changes, and channels to ask questions or report issues as work progresses.
In a wooded site along the west shore of the Missouri River, an engineering marvel was taking shape one afternoon in March that will eventually help provide fresh water to hundreds of thousands of people.