# 119-s-3736: Dakota Mainstem Water Supply Project Feasibility Study Act

119-s-3736, Dakota Mainstem Water Supply Project Feasibility Study Act, is a 119th Congress bill sponsored by Sen. Rounds, Mike [R-SD] (R-SD); status in_committee; PRIA reads it as touching household money (as of 2026-10-04).

- Canonical: https://policyrisk.com/legislation/119-s-3736
- As of: 2026-10-04
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Bill: 119-s-3736
- Congress: 119
- Title: Dakota Mainstem Water Supply Project Feasibility Study Act
- Status: in_committee
- Introduced: 2026-01-29
- Sponsor: Sen. Rounds, Mike [R-SD] (R-SD)
- Cosponsors: 1
- Policy area: Water Resources Development
- Touches household money: yes
- Last recorded action: 2026-10-04

## Summary

**The bill directs the Interior Department to complete a detailed** **feasibility study** of the proposed Dakota Mainstem Water Supply Project to decide whether a regional municipal, rural, and industrial water system should be built. - Residents in parts of South Dakota, Iowa, Nebraska, and Minnesota could gain a new municipal and rural water source if the study recommends construction. - The Dakota Mainstem Regional Water System, Inc. must coordinate with the Secretary and, if built, cover at least 25% of construction costs. - Federal support for the study is capped at $10.0 million and no more than 50% of study costs. The Secretary must produce a public feasibility report, consult federal, state, Tribal, regional, and local authorities, and the authority to carry out the study ends five years after enactment. *This would increase federal spending by up to $10.0 million for the feasibility study, with the Federal share limited to 50% and funded by appropriations.*

## Cosponsors (1)

- Sen. Thune, John [R-SD] (R-SD), 2026-01-29T00:00:00.000Z

## Provisions PRIA read

- Study for Dakota regional water supply: benefit, low. If enacted, the Secretary of the Interior would carry out a feasibility study of the Dakota Mainstem Water Supply Project. The study would be done with the non‑Federal Dakota Mainstem Regional Water System, Inc., and follow reclamation laws and standards. Federal funding for the study would be limi…

## Related bills

- 119-s-3597: National Quantum Initiative Reauthorization Act of 2026
- 119-s-3752: SAVE America Act
- 119-s-5025: Lindsey O. Graham Sanctioning Russia Act of 2026
- 119-s-1241: Sanctioning Russia Act of 2025
- 119-s-1261: CONNECT for Health Act of 2025
- 119-s-699: Purchased and Referred Care Improvement Act of 2025

## Sources
- [119-s-3736 on Congress.gov](https://www.congress.gov/bill/119th-congress/senate-bill/3736)

## Related
- [119-s-3597: National Quantum Initiative Reauthorization Act of 2026](https://policyrisk.com/legislation/119-s-3597)
- [119-s-3752: SAVE America Act](https://policyrisk.com/legislation/119-s-3752)
- [119-s-5025: Lindsey O. Graham Sanctioning Russia Act of 2026](https://policyrisk.com/legislation/119-s-5025)
- [119-s-1241: Sanctioning Russia Act of 2025](https://policyrisk.com/legislation/119-s-1241)
- [119-s-1261: CONNECT for Health Act of 2025](https://policyrisk.com/legislation/119-s-1261)
- [119-s-699: Purchased and Referred Care Improvement Act of 2025](https://policyrisk.com/legislation/119-s-699)
- [All bills in Congress](https://policyrisk.com/legislation)

Source: PRIA, https://policyrisk.com/legislation/119-s-3736 (as of 2026-10-04).