Issue · Environment

Environment

Every environment bill, vote, and legislator stance in Montana, automatically classified by Maddy, our AI policy reader.

Total bills
18
2025 Regular Session
Top supporter
Frank Smith
82% support rate
Top opponent
Kathy Love
25% support rate
Ranked legislators
10
5 support · 5 oppose
Key legislators

Who's moving environment in Montana

Legislators moving environment in Montana
Legislator Party Stance Support rate Decisive votes
Frank Smith
Frank Smith House · District 31
D
Strong +
82% 100
Marc Lee
Marc Lee House · District 74
D
Strong +
82% 109
Donavon Hawk
Donavon Hawk House · District 72
D
Strong +
81% 100
Denise Joy
Denise Joy House · District 46
D
Strong +
80% 110
Mike Fox
Mike Fox House · District 32
D
Support
79% 102
Kathy Love
Kathy Love House · District 85
R
Oppose
25% 100
Caleb Hinkle
Caleb Hinkle House · District 68
R
Oppose
29% 115
Braxton Mitchell
Braxton Mitchell House · District 5
R
Oppose
29% 103
Fiona Nave
Fiona Nave House · District 56
R
Oppose
30% 104
Becky Beard
Becky Beard Senate · District 38
R
Oppose
30% 97
Showing 1–10 of 18 bills

All environment bills

vetoed · Montana · Senate Jun 12, 2025

SB 472: Revise penalties for violations under 310 permit process

SB 472 removes the previous $250,000 cap on civil penalties for repeated violations of Montana's stream protection rules (under the Natural Streambed and Land Preservation Act). It specifically exempts forest activities that follow state forestry rules from these penalties. The bill affects developers, loggers, or others working in stream zones who violate permit requirements, allowing penalties to grow without limit for ongoing violations. It takes immediate effect upon approval.
died · Montana · Senate May 23, 2025

SB 349: Declare authority over existing fossil-fuel fired electric generating units

SB 349 would have transferred authority over air and water quality regulations for existing fossil fuel power plants in Montana from the federal Environmental Protection Agency (EPA) to the state Department of Environmental Quality (DEQ), making DEQ the sole permitting authority for these facilities. It claims federal EPA rules lack authority to restrict plant operations without requiring "significant economic investment" from plant owners and utilities. The bill includes a contingency that would void it if the EPA repeals two specific 2024 rules (89 Fed. Reg. 38508 and 39798). This bill died in committee in May 2025 and never became law.
died · Montana · Senate May 23, 2025

SB 473: Prohibit weather modification.

SB 473 prohibits most weather modification activities in Montana, specifically banning large-scale "geoengineering" projects like spraying particles into the atmosphere to alter climate (e.g., stratospheric aerosol injection or marine cloud brightening). It exempts established cloud seeding practices used for agriculture and snowmaking under existing law (85-3-101 through 85-3-424). The bill directly affects researchers, companies, or entities conducting weather-altering experiments within Montana’s borders. Key provisions ban intentionally releasing chemicals or devices for weather control, temperature modification, or sunlight intensity changes, except for permitted cloud seeding. The law takes immediate effect upon enactment.
died · Montana · Senate May 23, 2025

SB 460: Generally revise gravel pit laws

SB 460 would have required Montana's Department of Environmental Quality to ensure protection of surface and groundwater from open-cut mining operations. The bill amended state law to specifically mandate the department adopt rules for permits, records, and inspections, and to enforce water quality and quantity standards during mining activities. This would directly affect open-cut mining operations statewide by imposing new regulatory requirements on their water protection measures. The bill did not advance beyond committee and died in the 2025 legislative session.
died · Montana · House May 22, 2025

HB 71: Revise special license requirements allowing second lion license and removing Tendoy sheep reporting

HB 71 revises Montana hunting rules by allowing hunters to obtain more than one mountain lion license in a single license year, removing a previous restriction that limited hunters to one lion license per year. It also eliminates mandatory reporting requirements for the Montana Department of Fish, Wildlife, and Parks regarding harvests and tissue sampling from the Tendoy mountain sheep herd. These changes directly affect hunters seeking mountain lion licenses and the wildlife department’s reporting obligations. The bill amends Section 87-2-702 of Montana law to reflect these policy adjustments, focusing on simplifying licensing and reducing administrative reporting burdens.
signed · Montana · House May 19, 2025

HB 923: Revise categorical exclusions from nondegradation authorization

HB 923 directs the Montana Department of Environmental Quality (DEQ) to amend its administrative rules by January 1, 2026. This amendment will create a new categorical exclusion from nondegradation authorization requirements. This exclusion applies to areas where a county commission demonstrates it has prohibited drinking water wells and ensures absorption trenches are at least 1,000 feet from downstream high-quality surface waters. The bill also appropriates $10,000 to the DEQ to implement these rule changes and provide guidance.
signed · Montana · House May 19, 2025

HB 684: Eliminate deadline for water quality data review

HB 684 eliminates a specific deadline that previously required the Department of Environmental Quality (DEQ) to review data used for water quality assessments. This bill amends Section 75-5-702, MCA, removing the requirement for the DEQ to complete these data reviews within a set timeframe. This change primarily affects the DEQ's operational procedures for monitoring state waters and assessing their quality, as well as individuals and entities who submit water quality data for review.
signed · Montana · House May 14, 2025

HB 587: Revise mine reclamation laws

HB 587 revises existing mine reclamation laws. The bill updates the definition of "material damage" and clarifies the hydrologic and geologic information required for mining permits. It grants rulemaking authority to the Department of Environmental Quality and amends specific sections of state law. These changes impact mining operations by adjusting the regulatory framework and definitions used for reclamation activities.
signed · Montana · House May 12, 2025

HB 411: Exempt agricultural property from open space levies

House Bill 411 (HB 411) exempts agricultural property from local property tax levies that are used to fund open space initiatives. This means that owners of land classified as agricultural will no longer be required to pay the portion of their property taxes designated for open space purposes. The bill also allows counties to reduce any open space payments made to agricultural properties that are now exempt from these levies. This change applies retroactively to property tax years beginning on or after January 1, 2025.
signed · Montana · House May 8, 2025

HB 26: Repeal mercury thermostat collection act

HB 26, titled "Repeal mercury thermostat collection act," eliminates the existing Mercury-Added Thermostat Collection Act. This bill removes state requirements that prohibited the sale and installation of mercury-added thermostats. It also discontinues mandates for manufacturers to operate collection and recycling programs, for wholesalers to provide collection sites, and for related education, outreach, and annual reporting. The repeal of these specific sections of the Montana Code Annotated removes these environmental regulations concerning mercury thermostats.
Showing 1 to 10 of 18 bills
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