HB 935 Montana House · 2025 Regular Session

Limits to Fox Hills-Hell Creek aquifer withdrawals

HB 935 allows the department to temporarily suspend or close new permit applications for large groundwater appropriations (3,000 gallons per minute or more) from specific areas within the Fox Hills-Hell Creek aquifer. This action aims to balance water development with the protection of existing water rights. The bill also mandates the Bureau of Mines and Geology to conduct a feasibility study on groundwater availability in these areas. It appropriates $5,000 for this study, and the act's provisions are set to terminate on June 30, 2027.
Bill status signed all 5 stages cleared
Introduction
Mar 2025
Committee Review
Apr 2025
House Passage
May 2025
Senate Passage
May 2025
Signed into Law
May 2025
Introduced Mar 31, 2025 Signed May 19, 2025
Maddy AI version diff · 7 comparisons

What changed between versions

HB0935_X(2).pdf HB0935_X(3).pdf · 4 edits
MODERATE
The bill was simplified by removing the authority for the state to temporarily suspend new water permits, shifting the focus entirely to conducting a feasibility study. The study scope was expanded to include creating a preliminary model to predict how pumping affects water levels and pressure. The termination date for the study remains June 30, 2027, and the bill is now formatted as an enrolled bill.
Scope change
The bill no longer allows the state to pause new water applications; it now solely focuses on studying water availability in specific aquifer zones.
ELIGIBILITY

Removed the department's authority to suspend or close permit applications for new water appropriations.

REQUIREMENT

Added a requirement to create a preliminary model evaluating the effects of pumping on water levels and pressure.

Removed the specific threshold of 3,000 gallons per minute that previously triggered permit suspensions.

TECHNICAL

Changed the title to remove language about appropriating funds, indicating a shift from immediate funding to a study phase.

Floor votes · Senate Apr 25, 2025 · House Apr 30, 2025

How they voted

418
Passed · 1 other
Total votes 50
Apr 25, 2025
D Democratic18
18 Yea
100% Yea
R Republican32
23 Yea 8 Nay 1
71% Yea
Vote distribution
All Yea All Nay Mixed No data
Full legislative history

Actions timeline

Total actions
51
Key actions
9
Committee
6
Amendments
1
May 13, 2025
Signed into law
(H) Signed by Governor
lower
May 6, 2025
Upper · Passed
(S) Signed by President
upper
May 5, 2025
Lower · Passed
(H) Signed by Speaker
lower
Apr 30, 2025
House · Passed
House Vote: pass (100-0)
house
Apr 25, 2025
Senate · Passed
Senate Vote: pass (41-8-1)
senate
Apr 25, 2025
Introduced
(S) Returned to House with Amendments
upper
Apr 16, 2025
Upper · Passed
(S) Committee Report - (S) Natural Resources
upper
Apr 14, 2025
Upper · Passed
(S) Committee Executive Action - (S) Natural Resources
upper
Apr 7, 2025
Committee
(S) Referred to Committee - (S) Natural Resources
upper
Apr 2, 2025
Lower · Passed
(H) Committee Report - (H) Natural Resources
lower
Apr 1, 2025
Lower · Passed
(H) Committee Executive Action - (H) Natural Resources
lower
Mar 31, 2025
Committee
(H) Referred to Committee - (H) Natural Resources
lower
Mar 31, 2025
Introduced
(H) Introduced
lower
1 primary · 0 co-sponsors

Sponsors

Role
Legislator
Party
State
District
P
Photo of Morgan Thiel
Morgan Thiel
RRepublican
MT
30