This bill directs the Secretary of the Interior to conduct three distinct feasibility studies for proposed municipal, rural, and industrial water supply projects within the Missouri River basin. These studies aim to assess the viability of enhancing water infrastructure and delivery to various communities across South Dakota, Iowa, Minnesota, and Nebraska. Specifically, the bill mandates studies for the Western South Dakota Water Supply Project , the expansion of the Lewis and Clark Regional Water System , and the Dakota Mainstem Water Supply Project . For each, the Secretary, in coordination with non-Federal entities, must produce a detailed feasibility report recommending construction authorization and determining the appropriate non-Federal share of construction costs, which must be at least 25 percent. The Federal share for the feasibility study costs for each project is capped at 50 percent, requiring cost-sharing agreements with the respective non-Federal project entities. The bill authorizes an appropriation of $10,000,000 for each of the three studies, with the authority to conduct them terminating ten years after enactment.