PolicyBrief
H.R. 9785
119th CongressJul 20th 2026
South Dakota Water Feasibility Studies Act
IN COMMITTEE

This act authorizes the Secretary of the Interior to conduct and co-fund feasibility studies for three major regional water supply projects across South Dakota and neighboring states.

Dusty Johnson
R

Dusty Johnson

Representative

SD

LEGISLATION

South Dakota Water Act Authorizes Three Major Feasibility Studies with $30 Million in Federal Matching Funds

The South Dakota Water Feasibility Studies Act is essentially a roadmap for securing the state’s hydration for the next generation. It doesn't start digging trenches tomorrow, but it authorizes the Secretary of the Interior to launch three massive investigations into whether we can move Missouri River water to the western part of the state, expand the existing Lewis and Clark system, and build out the Dakota Mainstem project. Each of these studies is capped at $10 million in federal money, and the government is offering to split the bill 50/50 with local water systems to see if these projects actually make sense from an engineering and financial standpoint.

The Missouri River Connection

For folks in western South Dakota, this bill specifically targets the Western Dakota Regional Water System to see if piping Missouri River water across the state is a viable way to support municipal and industrial growth. Think of it like a massive plumbing upgrade for an entire region. If the study gives a thumbs-up, the bill already sets a ground rule: the local community would eventually have to chip in at least 25% of the construction costs. For a rancher or a small business owner in a dry county, this could eventually mean more reliable taps, but it also means the local water board will be looking for ways to cover their half of the study costs right now.

Expanding the Reach

The legislation also looks at the Lewis and Clark and Dakota Mainstem systems, which would stretch water access across state lines into Iowa, Minnesota, and Nebraska. This isn't just about South Dakota; it’s a regional play to ensure that as towns grow, the water supply doesn't run dry. The bill mandates that the Secretary of the Interior must consult with tribal and local authorities (Title II, Sec. 202), ensuring that the people who live on the land have a seat at the table while the experts crunch the numbers on environmental impacts and pipe diameters.

The Price of Planning

While the federal government is dangling a 50% discount on these studies, the local water systems—and by extension, the people who pay monthly water bills—are on the hook for the other half. Because these studies can cost millions, local districts might need to tap into reserves or seek state aid to meet the federal match. There is also a 10-year deadline (Title III, Sec. 301) to get these studies moving. If local entities can't get their funding together within a decade, the authorization expires, and the chance for this specific federal partnership disappears. It’s a 'use it or lose it' scenario for regional water security.