Repeal numeric nutrient standards
This bill revises Montana's water quality standards by repealing the existing numeric nutrient standards. It directs the Department of Environmental Quality (DEQ) to remove all references to these standards from administrative rules and repeal the specific circular (DEQ-12A) that established them. The bill aims to address the previous standards, which were described as unachievable and burdensome for entities like Montana's municipal wastewater treatment systems. Additionally, it requires the DEQ to update related guidance and policies and eliminates the Nutrient Work Group.
Bill status
signed
all 5 stages cleared
Introduction
Feb 2025
Committee Review
Apr 2025
House Passage
Apr 2025
Senate Passage
Apr 2025
Signed into Law
May 2025
Introduced Feb 22, 2025
Signed May 5, 2025
Maddy AI version diff · 4 comparisons
What changed between versions
HB0664_X(1).pdf
→
HB0664_X(2).pdf
·
1 edit
MINOR
The bill text shows a minor formatting change where a period was removed from the end of the provision stating the bill's effective date. This appears to be a technical correction rather than a substantive policy change.
TECHNICAL
Removed a period at the end of the provision regarding the immediate effective date, likely a formatting adjustment.
Floor votes · Senate Apr 15, 2025 · House Mar 7, 2025
How they voted
34–16
Passed
Total votes 50
Apr 15, 2025
D
Democratic18
88% Nay
R
Republican32
100% Yea
Vote distribution
All Yea
All Nay
Mixed
No data
Full legislative history
Actions timeline
Total actions
37
Key actions
9
Committee
6
May 1, 2025
Signed into law
(H) Signed by Governor
lower
Apr 24, 2025
Upper · Passed
(S) Signed by President
upper
Apr 23, 2025
Lower · Passed
(H) Signed by Speaker
lower
Apr 15, 2025
Senate · Passed
Senate Vote: pass (34-16)
senate
Apr 10, 2025
Upper · Passed
(S) Committee Report - (S) Natural Resources
upper
Apr 9, 2025
Upper · Passed
(S) Committee Executive Action - (S) Natural Resources
upper
Mar 17, 2025
Committee
(S) Referred to Committee - (S) Natural Resources
upper
Mar 7, 2025
House · Passed
House Vote: pass (69-30-1)
house
Mar 1, 2025
Lower · Passed
(H) Committee Report - (H) Natural Resources
lower
Mar 1, 2025
Lower · Passed
(H) Committee Executive Action - (H) Natural Resources
lower
Feb 22, 2025
Committee
(H) Referred to Committee - (H) Natural Resources
lower
Feb 22, 2025
Introduced
(H) Introduced
lower
1 primary · 0 co-sponsors
Sponsors
Role
Legislator
Party
State
District
P
Bill Mercer
RRepublican
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